Broken or totally obsolete SLR cameras can still look very cool and professional, and have a great feel to it.
To get knowledge of the build, and see which parts are in it, spend time to take one apart.
Total disassembly involves tearing off the rubber grips of the body and glued sheet aluminum inside, taking off the knobs etc. to get to screws, so the chance putting it back looking nicely is slim.
Here we are interested in an impressive appearance, not optical quality.
Old or broken SLR (I got a broken Practica B 200, made in the DDR, for E 3.50 in the 2nd hand store). It is fitted with a 50 mm F 1.8 standard lens, in great shape. The camera weighs a whopping 750 g and came with half of its leather case.
One or two 9 (or so) cheap LED flashlights.
Some scrap wire.
As the picture comment says, I bricked the camera by closing it while the unlocking mechanism was removed. Don't want to ruin it with a grinding wheel, sledge hammer or chainsaw, but just got another camera from the 2nd hand store. When it is done, I'll rewrite the instructable...