I buy the cheaper grade of 1/2" pvc pipe (thinner walls; for sprinkler water lines). They come in 10 footers. I cut them in half. A #3 rebar (3/8" x 18" or 24") gets pounded into the ground and a pvc section gets slipped over the rebar.
The downside? If some jamoke swipes the PVC, you have a tire threat in the weeds.
