So, it's not exactly a 'modern' printer. My HP Deskjet 500 finally gave out last week. After 22 years. Surviving many generations of computers.
I disassembled it this morning to recycle it's various components.
1) it's amazing how these things are put together. I think there were about 10 screws total. Everything else was latches or snapped together in some way.
2) many parts usable for other projects (nice straight rods, a belt, two electric motors, a handful of plastic gears, a bunch of different size springs)
3) 80% plastic, which can probably be recycled. The rest sheet metal.
4) not sure what to do with the electronics, other than maybe the power supply and several ribbon wires and matching connectors.
5) the ink priming mechanism was especially interesting (and very inky - do NOT wear a white sweat shirt)
The long metal rod and the print cartridge sled (or whatever it's called) will make a handy wobble control mechanism for my Makerbot.
By the time we can put various space hardware together in such an efficient manner we should be in good shape - sorry, that was totally unqualified. But seriously, looking at various stuff around the house, I am more and more impressed at how much engineering, refinement and optimization goes into these everyday items - just, you really don't notice it until you take it apart. It's really quite artful.