BeeJayBee
Queen Bee
2 x 'pot' blocks (concrete) and 2 suitable lengths of 3" x 3" fence post, (about 4ft) no sawing required.
blocks tend to be more stable than 4 legs, and less prone to sinking into ground.
We use breeze blocks, at least I think that's what they're called. The ones that are weatherproof rather than the lightweight internal ones. A lot cheaper, but not as good looking, as the walling blocks.