I was recently asked to help a friend out with a frame to both hold a compost bag and to give a frame to lean on whilst digging into the bag.
The result is here.
Nothing too complicated, a large diameter ring for the base, 3 vertical rods and a smaller diameter ring at the top. This gives it extra stability.
It’s the second one I have made, this one from 12mm steel to give it extra strength when leant on.