in the broad category of things with wheels that are cool, how about Grateful Dead tour equipment loading cases?

imagine if these were autographed, loaded with tour guitars or speakers... that would be a hell of any upgrade. But these are bouncing around through auctions as investors flip them.

They last sold for 1200  in 2012, by Donley Auctions in Illinois. https://www.gettyimages.com/event/valuable-grateful-dead-artifacts-go-up-for-auction-545204877

http://hazelhomeartandantiques.blogspot.com/2015/03/important-collection-of-grateful-dead.html