Having lost a couple of sets of keys I bought a chipolo. Setting it up was easy and it doesn’t take up much room on my key ring. I tried it out by putting my keys at the far end of a playing field and then tracked them. Tracked them OK.
I didn’t know I needed these as much as I do. These were recommended to me by a friend and I really underestimated how long I took searching for my keys and my phone. This is such a time saver.