Who needs IoT cloudy tat to keep track of important things like keys or wallet?
You put them somewhere in your accommodation so you know where they are...
When leaving your accommodation e.g. off to work, pub, gym whatever (if needed) you pick them up & place in pocket, bag, etc (whatever your preferred option - just make sure it's somewhere that they cannot slip out of easily and get lost)
The PITA hassle of forgetting something important like keys / wallet once tends to focus your mind so you do not do it again!