Allen,
Call me a redneck. I have too much on my plate to get this idea started. But I think it's a great idea (for someone who has an understanding wife).
I want to convert a truck cab into a giant sandblasting cabinet.
Buy a junk Ranger or S10 truck. Strip off the bed and everything in front of the firewall. Leave the doors and glass intact. Remove the seat, steering and pedals.
Now cut two arm holes in the back of the cab for the sandblasting gloves. Just about anything can be put inside the cab. Close the doors and blast away.