This is becoming less common among electro-trash as SMD rules the day instead of larger, more discrete, more easy-to-separate components. For example, try pulling anything useful - camera lens, buttons, memory, ICs, anything - from any mobile phone tossed away.
Yea, most of tech is not human size anymore. Still, some things can be repurposed in high tech workshop with a lot of skill. For example Optical Pickup Unit from Blu ray for laser scanning microscope.
