hmm... MacBook Pro - 2009, 15-inch, dead donor
2002? Titanium G4 PowerBook (typical broken hinge, but works)
2012 MBPro 13-inch, SSD, still daily user
2017 MBAir NVME drive, also daily use
desktops
2001 iMac G3, works, could be a donor if needed
2 eMacs, both USB 2.0, one is a donor, other is in daily use, burning a variety of CDs/DVDs, but that gets much less use now.
2 2012 minis, both are useful in different ways
2006 iMac 17-inch, dead LCD
2004 iMac G5, dead logic board
2008 iMac, 20-inch, SSD, works good
2011 iMac, 21.5-inch, works, use for experimenting with OCLP installs
(I have a bedroom that I use for a workshop, need to prune stuff out pretty soon...)