Modified the Race Track Scenics car display stand into a portable sanding/break-in/test bench that is easy to use anywhere. 

Material LINKS:

Race Track Scenics Car Stands
9 Volt Harness from Amazon Example 
1/4″ Adhesive Backed Copper Tape
Adhesive backed mounting paper for sandpaper application.

Tool Links:

Low Cost Beginner Soldering Iron
60/40 Solder