I'm an Android developer and I have stands for 2 phones between my split keyboard (the Kinesis Gaming model, used to have the Advantage which I also love). I k

I'm an Android developer and I have stands for 2 phones between my split keyboard (the Kinesis Gaming model, used to have the Advantage which I also love). I keep the phones between my keyboard to focus on during development which doesn't address the more interesting part of your question. I have many old phones around now, some that can't even be updated to support the minimum OS of the app I am building. So I have tried to figure out what to do with the old phones. Most common android reuse case: IP Camera. There are a few different apps which turn your phone into an IP Cam. I have used old phones to watch my 3D printer, explore under the floor in my house (phone attached to stick), to watch/record plants grow, and as a security cameras. The problem is, often with these old phones, streaming live video will drain the battery faster than the charger can charge it. I'm still looking at workarounds for this latter issue. Depending on what you are trying to film it can be surprising how "good" the old Android cameras are. I usually use this app: https://play.google.com/store/apps/details?id=com.pas.webcam&hl=en_US&gl=US https://play.google.com/store/apps/details?id=com.pas.webcam... The other thing I have done is turn them into dashboards, this is more applicable to tablets though.