I once spent a long night with my cart on a merry-go-round.
I couldn't get decent radio mic reception from the closest stationary hiding spot, so I found a wheel chair lockdown spot on the opposite side of the merry-go-round from where we shooting a long dialog scene. The wheel chair holder fit the spread of my PSC upright sound cart wheels perfectly, so there I sat all night going around and around (trying not to get dizzy).