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What should I do with old electronics?
(lemm.ee)
This is a most excellent place for technology news and articles.
Adding to your list some devices have open source projects that breath new life into them. For example an old kinect for an Xbox 360 can be used for motion tracking on a PC and, if I recall correctly, a webcam.
Another example is the LeapFrog Leapster GS running RetroArch.
A lot of it can be just fun novelty projects to do throughout a weekend