For some time ive had a highway sign sitting in my basement from my less benefiting to society days......
It got used a temporary coffee table for a while but eventually ended up in the basement for a few years.
I needed somewhere to put my computer tower and other computer parts and designed a simple case in google skechup and then created the layout on a cut-sheet program.
i was going to make it out of plywood and just paint it but saw the old sign while wandering around the basement
the sign was 3/4 inch birch plywood that was coated with a reflective sticker of some kind to make the sign. As it had been on the side of the highway it was a bit warped but i managed to make due ok with it.
sorry i don't really have a step by step plan of what i did and im not sure i could even explain it as im not a very good carpenter
i used 2 inch wood screws to assemble the case and some aluminum angle stuff for the front edges that i picked up at crappy tire when i bought the casters.