I've had an idea for a while about a huge cylindrical
compost bin that is too heavy to spin. Instead it sits on the ground and to spin it you roll it over a few times. Then roll it back a few days later.
The frame I'm imagining would be the a steel utility wire spool. They kind of look like this with about an 8' diameter:
I guess this idea could work with smaller drums like an oak barrel as well. Rolling on flat ground is quite possibly easier than building a system to support and rotate it.