It's a no-brainer, especially if you keep losing your things. I got a pack of 4 units, kept 2 for myself, and gave my brother 2 units. I used 1 unit for my keys, and another for my luggage bag (when I travel). Connects beautifully to Android's Find My Device network.
The network of devices supporting this standard is still very broad-meshed. In many cases I'm not able to do a localization - even in very crowded areas. But this may change soon.
Fantastic product, only improvement would be a direction indicator when trying to locate a nearby tag. (But I'm pretty sure that's a limitation of the underlying tech)