What things have you found in your home that you've used on your layout?
I went to Walmart this morning to get a few things and one thing I needed was a new toothbrush.
I had an Oral B brush with vibrating bristles and it was due for replacement. I started to toss the old one then got to thinking about what's inside it that makes it work.
I found a AAA battery and a very small motor, 1/4" diameter and not quite 1/2" long with a 1/4" long shaft.
Not sure what I'll do with it, but it seems like just the thing for a layout project.
I've also used parts from old computers, printers, and VCRs. Heck, I've even used discarded plastic pieces from my wife's insulin pump supplies!