Maybe like me, you're a pack rat and horde all sorts of shiny, semi-working technology . So, when my fancy Razr Maxx stopped charging about a year ago (hey, so I'm three generations behind the times, sue me), I simply had to set it aside and buy a new phone (S3, hurray! The Razr still worked fine, I just had to drill a hole in it and extend a battery wire out so I could attach some alligator clips to those and attach that to a USB charger.
Finally, using a dremel I carved the hole at the bottom of the phone's casing a bit deeper, to fit the fatter USB wire.
Sticking it in place with hot glue, I then tested everything on a USB wall charger before using epoxy to keep the USB cable in place at the bottom of the phone, reassembled it, and was ready to go!
It served me well for many years, but this is a definite upgrade.
This one has a soldering iron, hot air gun, and a variable power supply, all of which I ended up using for this project.
Turning one of my old Android phones into a webcam is something I've been thinking about doing for a long time now.
A couple of years ago, I backed a 3D printer project on Kickstarter (Rigid Bot, if you're interested).
Depending on your phone, for tools you may need a soldering iron, bench top power supply, hot glue gun, and a set of teeny tiny screw drivers.
I was recently provided this soldering station from thediyoutlet.com, and this project was it's maiden voyage.
Worked like a charm, more about it in the next step.