After getting an Arduino and doing relatively little with it over the past couple of years, I've spent a bit more time trying to figure out what to do with it.
I've eased into a few Maker type projects of late, especially after graduation. Some has involved salvaging parts from old computer drives, motherboards and the like. Aside from blinking lights and controlling speeds on old CD ROM motors, no robots have been created.
Building things out of wood pallets has been more constructive, even if the projects are workbenches and wood racks for taking apart more pallets.
At some point, building a work area for salvaging parts should be used to actually build things. But the electromechanics of CD drives in particular has been interesting, and it may take time to figure out what to do with them.