A brainy junkbot with a downspout body.
Step 1: Parts and Tools:
One round downspout piece (Home Depot, gutter aisle).
One wire strainer (Home Depot, gutter aisle).
Two 1/2" conduit connectors (Home Depot, conduit aisle).
One braided toilet supply line (Home Depot, toilet repair aisle).
Two battery charging clips (hardware stores other than Home Depot).
Two 3/16" axel hat nuts (Home Depot, screw aisle).
Two #10 brass finishing washers (Home Depot, screw aisle).
Four #8 x 1/2" sheet metal screws (Home Depot, screw aisle).
Two #8 x 5/8" machine screws (Home Depot, screw aisle).
Some circuit board scrap that you got by smashing something.
If you want your junkbot to hold a sign: a wire stake (Home Depot, sprinkler aisle) and possibly a thin metal shingle (Home Depot, roof aisle).
If your want your junkbot to be painted and have decals: spray paint and decals.
Dremel with cutting wheel
Hot glue or metal epoxy
1/8" drill bit for metal
1/4" (or near that size) drill bit for metal
Tin snips (if you want your bot to hold a sign)