The other day I opened my door. Wasn't watching & what I thought was a light breeze slammed the door back. So with two pieces of PVC I made a door stop. Bought them so one slipped onto the other. Buried the larger one in the ground. I leave one set up all the time in case the door gets away from me. I can use the other to keep the door open when I'll be doing solar viewing to get some air flow.
That's pretty slick. I use a bucket with some rocks to hold it open.
Steven