Navigating the germy hallways of schools this fall kind of seems like a self-sentence for the flu. Luckily, you have power over at least one surface: the inside of your water bottle.
If you know someone who constantly fills up at hallway water fountains, consider gifting them a UV-powered self-cleaning water bottle, which can zap germs from the interior of the cap and bottle. Of course, it's still upon the receiver to keep the mouth spout clean, but at least they'll have peace of mind about the fluid they're guzzling.
Larq is the trendiest self-cleaning water bottle out there, but in our testing, we settled on CrazyCap as the best self-cleaning bottle. There's also the Mahaton bottle on Kickstarter.