How do you keep your nail polish bottle balanced while brushing your nails? Here's a clever invention that is a lot simpler than growing a third arm for the task. Liz and Mark invented Tweexy, a wearable bottle holder. It's like a ring pop, but less tasty.
The inventors first measured 250 bottles of nail polish to gauge the range of sizes, then designed a flexible silicone cup that would hold the largest number of them. Slip the bottle inside, then the Tweexy onto your fingers. Little wings on the ends make it easier to switch the Tweexy from hand to hand with wet nails.