Universal gift thats less than 30$ that you really found helpful

Theres a party theme called “my favorite thing” and everybody brings in an item in a price range they thought was neat/helpful and actually use and bring 2 of them. Everybody presents their item and has 2 of them. Once presentations are done people get to pick 2 items white elephant style.

In line with that, what was something 20-30$ that was surprisingly useful? Im adding universal because i know a lot of people brought lotions or makeup in the examples but i want the range to be more broad.

For me it would be a roll up toiletries bag. (16$ at Ross) I travel semi-frequently so mine is pre-packed with toiletries, my meds, a few hair tools. Its made packing for a trip much easier because i can just throw the whole bag in and not worry about packing each individual thing.