I use two sanders, one with coarse paper, one with fine. The cords get in the way so here's my solution.
Sanders.jpg
This is similar to Hollywood Rail, a system used on auto plant assembly lines. It used 2" pipe and ran hundreds of feet with many tools suspended. I think it's kinda obsolete now, displaced by more modern systems.
My mini system uses 3/4" conduit and toy car wheels. I don't hang the sanders, just the cords. Works really well.
When I need to travel across the shop out of range of the suspended cords, that's what the orange cord is for. Doesn't happen often.