For quite a while, my favorite things to take apart, in that they actually had potentially useful parts, were CD drives from discarded computers. A typical CD drive has three motors (spindle, tray, and head) (frequently of different types), an audio amplifier, a laser diode, some gears and mechanics, a couple strong rare earth magnets as part of the head fine-movement mechanism, plus the usual contingent of random electronics bits.
In general, a discarded computer has a lot of interesting parts, often moreso in the edge components (power supply, cd drive, disk drive, cables, leds, switches) than in the "main electronics" section.