“The best 20$ you ever spent”?

Doesn’t have to be exactly 20$ but what is the best thing you bought during or after a pregnancy that was relatively cheap for the use you got from it?

When I was getting to the point of not being able to bend over I bought I little grabber from Amazon, we have to feed one of our pups in his cage(at the time he had to eat a special prescription food and we didn’t want the dogs to switch bowls) and I got to the point I had to ask hubby to bend down and get his bowl out from where it ended up in the back of his cage so I could feed them, so I got this little grabby claw, it was like 20$(usd) and it is the most useful item I ever bought. The baby dropped all 12 of her binkies/pacifiers behind/under her crib? Grabby claw. Tossed the clean diaper you were gonna use in between the changing table and wall? Grabby claw, you lose anything light weight where you can’t get your hand? Grabby claw xD

So what is your best, cheap, useful, item that continues to be useful outside of the reason you bought it?