Self-cooling water bottles
by djloon Jun 18, 2026 3 Comments 3 Links
#cool, #hydration, #selfcooling, #tech, #water, #waterbottle,
by MeLlYmEl Apr 24, 2026 4 Comments 4 Links
#compact, #compactumbrella, #pocketumbrella, #portable, #raingear, #umbrella,
And they should have a coating of water repellant stuff like liquid glide.
Glass windows that clean themselves
(5 upvotes)Spacecraft and aircraft coatings that prevent ice build-up
(1 upvotes)Phone cases that float
(3 upvotes)Waterfall road signs
(6 upvotes)Liquid medicine containers that leave no residual medicine
(4 upvotes)Non-stick ketchup bottles
(4 upvotes)Toy balls that bounce on water
(1 upvotes)Theres these too, but look like they are already broken – i guess that means the wind wont bother trying (?)
been done, this works for me
lol – this