I wonder if those Macs are even functional, certainly not the PB 100. Hope they were gutted before the artist set about his little "projects", there was certainly no reason to ruin a perfectly restorable one with all the damaged and yellowed cases out there. (Although the PB 100 is arguably useless as a laptop since the lead acid batteries are virtually non-replaceable).
Speaking of yellowing: time to buy some Platinum paint for that IIGS keyboard. Or start looking for a new one. ;-) Better yet, a Newton keyboard!