DIY Remote Presence?

Hey there

I'm currently working in a distributed team. 1-3 (out of 4) of us are in the office at any one team, and 1-3 of us are working remotely, on any given day.

I'd like to put a camera at the end of the desk in the office so that anybody working remotely can get a quick view of who is in and at their desks, and just generally know that there's some life on the other side of Slack.

What I'm looking for is some examples of ways other teams have done this, ideally fairly cheaply and DIY. Did you use an iPad? Netbook? Mac mini? Raspberry Pi?

Thanks!