The PowerBook G3 Lombard parts machine I ordered is waiting for me at home.
Watch the keyboard on it be even more broken than the one I'm trying to fix.
The donor keyboard works perfectly! The parts machine also included a DVD-ROM, which has now replaced the CD-ROM with a broken plastic cover that this machine originally came with, and to celebrate the working keyboard (and test the DVD-ROM), I played one of my CDs, Discovery by ELO, in the Apple CD Player app.
And look at that CD Player app! It's so gorgeous. All software should be required to look like this. By law.
The donor machine also includes a 400MHz CPU card compared to my current 333MHz card, so I may look into swapping that at some point. I'd also have to give the machine a well-overdue repaste.
Pictures taken with the Mavica CD400 btw.