These Smart Water Bottles Run on Solar Power and Remind You When It's Time to Drink Up

Bazaarian
Bazaarian

The suggestion that people need to drink eight glasses of water per day is a long-held myth. While it’s important to stay hydrated, the amount of water you should consume on a daily basis depends on many different factors, including your age, sex, weight, activity level, and even your location.

A 24-ounce, double-wall insulated smart bottle called the Hydrade can help you figure out exactly how much water your body needs, then send reminders to your phone or other electronic device when it’s time to drink up. It pairs with your phone, health apps, or wearables like the Fitbit or Apple Watch.

Unlike other smart water bottles, though, this one is completely cord- and battery-free. It has a built-in solar panel that lets you charge it naturally when you step outside for a run or hike, and a single charge can power your bottle for up to 20 days. However, it also charges when exposed to any type of illumination—even indoor lighting.

In addition to knowing how much water your body needs, its sensors can also tell whether you’re drinking the water or pouring some out for your dog. The maker, Bazaarian LLC, says the Hydrade Bottle keeps beverages cold for 22 hours, and hot for up to 13 hours.

The bottle is made of dishwasher-safe, BPA-free stainless steel, so it’s eco-friendly and recyclable. There’s a charitable side to the business, too. Depending on your personal level of water intake, Bazaarian will donate a set amount of money to a charity that supports clean water initiatives in developing countries. You can track both your charitable donations and your hydration logs via the app.

Get the Hydrade Bottle on Kickstarter now for $35—a 53 percent discount off of the retail price.

This Rolling Smart Robot Will Keep Your Cat Company and Help It Exercise, Even When You’re Not Home

Ebo
Ebo

As any true ailurophile knows, cats love to sleep. On average, kitties spend anywhere from 16 to 20 hours of each day napping. But that laziness we often find so charming can sometimes lead to obesity, which can cause some pretty serious health problems for your feline friend. So how do you make sure your cat stays happy and healthy, even when you’re not home? That’s where Ebo comes (or rolls) in.

Ebo is a smart robot designed to keep your cat company and provide them with some much-needed stimulation, especially when you're not around. With more than $90,000 in pledges raised already, Ebo crushed its original $5110 Kickstarter goal, but you can still back the project here, with pledge tiers that start at $159 for a standard EBO and a smart collar that tracks your cat’s activity levels.

The Ebo itself, which is just over two inches tall, connects to Wi-Fi and features an app that allows you to schedule when you want it to start and stop playing with your cat.

When it’s playtime, the tiny robot scans the room to ensure there’s enough space to play safely. Once it makes sure the coast is clear, the robot moves on its own, utilizing an ergonomic design that enables it to wheel in any direction, spin, roll over, or even dance. You also don’t need to worry about keeping your cat’s robot friend charged. If your Ebo happens to be running low on battery, it rolls itself back to its charging station until it’s ready to go again.

According to the designers, Ebo interacts with cats in a way your feline friend understands—through a mix of sound, movement, and light that is always unpredictable. You can even play with your cat through the Ebo with its built-in laser.

The app also allows you to monitor your cat through video. And if they do something cute—as they always do—you can easily snap a photo or shoot a video, edit it, add fun filters, and then share it with others.

The device’s smart collar can be used for up to 30 days on a single charge. Should it get stuck, there’s a safety mode in which it will be released automatically to prevent accidental choking.

If you want an upgrade, there's the Ebo Pro (starting at $199), which features an AI algorithm that analyzes your cat’s mood and motion and adapts for future play.

No matter which Ebo you choose, they all come full of accessories, including decorative soldier, bamboo, onion, or feather caps. And if you order in time, you can snag a model decked out in a Santa hat.

Mental Floss has affiliate relationships with certain retailers and may receive a small percentage of any sale. But we choose all products independently and only get commission on items you buy and don't return, so we're only happy if you're happy. Thanks for helping us pay the bills!

11 Unique Advent Calendars That Are Perfect for Your Christmas Countdown

Target/Amazon
Target/Amazon

Counting down the days until Christmas is a wonderful tradition with some pretty old roots. The ritual dates back to the mid-19th century, when German Protestants made chalk marks on doors or lit candles counting down until December 25.

It was in the early 1900s when printed Advent calendars came about, and it's said they were invented by a man named Gerhard Lang, who began producing and selling them in Germany. Over the years, these calendars have certainly changed. Now instead of just an illustration or piece of chocolate, the daily treat can take the form of a soothing tea bag, a Ron Weasley figurine, or even a fun little science project.

Here are 11 of the coolest Advent calendars we could find online.

1. FUNKO Harry Potter Advent Calendar; $39

Funko Harry Potter Advent Calendar
Funko / Amazon

“Merry Christmas! Merry Christmas! Ring the Hogwarts bell…” Celebrate the season with miniature Funko versions of 24 witches and wizards from the spellbinding world of Harry Potter. Each character stands a little under 2 inches tall, so they won’t take up too much space. (Come to think of it, you could probably fit the whole lot in one of Dobby’s socks.)

Buy It: Amazon

2. 24 Days of Tea Advent Calendar; $32

Tea Advent calendar
Uncommon Goods

Stay caffeinated this December with two dozen tea bags. This calendar contains an eclectic assortment of flavors, such as Chinese black tea and Scandinavian tea with cranberry and elderflower. Just thinking about them is already making us feel all warm and cozy…

Buy It: Uncommon Goods

3. Nintendo Super Mario Advent Calendar; $50

Nintendo Advent Calendar
Nintendo/Amazon

For the Nintendo fans out there, this Advent calendar features 17 characters and seven accessories from the world of Super Mario to unlock in the countdown to Christmas. From Mario and Princess Peach to a piranha plant and goombas, this set is perfect for anyone waiting to unwrap a Switch for the holidays.

Buy It: Amazon

4. Women’s 15 Days of Star Wars Socks Advent Calendar; $15

Star Wars sock Advent Calendar
Target

For $15, you get as many pairs of Star Wars-themed socks, a decorative box with a fun little quiz for franchise diehards, and—blessedly—zero references to that infamous 1978 holiday special. What else would you want to wear on your feet when you go see Star Wars: The Rise of Skywalker?

Buy It: Target

5. Women’s Nightmare Before Christmas 15 Days of Socks Advent Calendar; $15

Nightmare Before Christmas Advent calendar
Target

Why should Star Wars fans have all the fun? Target also offers a Halloweentown-centered Advent calendar, complete with Jack Skellington and Oogie Boogie hosiery. Speaking of animation, Disney Princess and Lilo & Stitch sock sets are available, too.

Buy It: Target

6. Handcrafted Caramel Advent Calendar; $30

Carmel Advent calendar
Uncommon Goods

If flavor names like “Hawaiian Sea Salt” and “Tapped Maple” make your mouth water, do yourself a favor and get this delicious calendar full of 24 handmade caramel samples. As a bonus, the box set features some charmingly illustrated animals from artist Cindy Hendrick. We’re partial to the apron-wearing fox.

Buy It: Uncommon Goods

7. Yule Do Nicely: A Ghostly and Weird Advent Calendar; $6

Yule do Nicely Advent Calendar
Rhys Hughes / Amazon

Ditch the candy and toys, because if you like creepy and somewhat unsettling stories all year—not just Halloween—then this is ideal. The first 24 stories of this pocket-sized book form a weird Advent calendar leading up to the big day. Then on Christmas, enjoy 28 strange, short tales from "The Shocking Stocking" section.

Buy It: Amazon

8. Purple Ladybug Novelty Dinosaur Toys 2019 Advent Calendar; $22

Dinosaur Advent Calendar
Purple Ladybug Novelty / Amazon

Look, you’re never too old to channel your inner John Hammond. Purple Ladybug offers an assortment of prehistoric animal models and fossils in a 24-day advent calendar—and their (ahem) “dino-mite” set saves the very best critter for last.

Buy It: Amazon

9. Ooshies DC Comics Advent Calendar; $50

Ooshies Advent Calendar
Ooshies / Amazon

Countdown to the holidays with your favorite super heroes or villains—like Batman, Superman, the Joker, and Wonder Woman—in tiny pencil-topper form. The set even comes with eight exclusive Ooshies.

Buy It: Amazon

10. Edible Artwork Chocolate Advent Calendar; $35

Chocolate Advent Calendar
Uncommon Goods

This isn’t your typical chocolate Advent calendar. This 25-day calendar is full with melt-in-your mouth, handmade chocolate in the shape of martini glasses, flip-flops, cowboy boots, and more.

Buy It: Uncommon Goods

11. STEAM Activity Countdown Advent Calendar; $25

Science Advent Calendar
STEAM / Amazon

This 106-page book includes two weeks’s worth of activities for the curious children in your life. Each one will bolster the little tykes’s appreciation for science, technology, engineering, art, and/or mathematics. Among other things, they’ll learn how to turn a Sierpinski triangle into a mesmerizing Christmas tree. How cool is that?

Buy It: Amazon

Mental Floss has affiliate relationships with certain retailers and may receive a small percentage of any sale. But we only get commission on items you buy and don’t return, so we’re only happy if you’re happy. Thanks for helping us pay the bills!

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