UGREEN FineTrack Mini 2 Smart Finder

The IP68 rating means I've dropped this in a puddle and it came out working perfectly, no worries at all. Battery lasting 5-7 years is a huge plus since I never have to remember to charge another gadget.

The 110dB alarm is genuinely loud enough to find it under a couch cushion, and the 5-7 year battery life means I won’t have to worry about replacing it for a long time. It’s surprisingly small and the fluorescent design helps when I’m digging in my bag.

I dropped my keys in a puddle and the IP68 waterproofing saved me—still works perfectly. The left-behind alert has already saved me twice from forgetting my backpack at a cafe.