Recently I brought a Power Mac G3 off tardme and the guy kindly threw in two PowerBooks that he also had listed but didn't sell.
One is working but the other isn't. I disassembled the non-working one today and found it doesn't have a hard drive so that's the first problem solved. Well, not solved but understood.
The second one the battery is stuck in it, but it powers up. Unfortunately it has the common screen tunnelling issue. Also it doesn't seem to read any of the install disks. The plan is to swap screens across and see if the other one is any better.