For jelly feeders ........ I cut a piece of scrap board (good plywood stands up to weather best) larger than the Rubbermaid brand dish I'm sacrificing to the birds. I pencil in the size of the bottom of the dish ..... cut that out with my scroll saw. Then the dish fits in just right, won't blow away but I can get it out to clean.
Also, beside the dish, a little hole is drilled to hold a bit of dowel so yet another orange is offered.
I use those little eye hooks (right word?) in each corner to attach chains for hanging to the the bottom of the deck or the bird feeders.

I can try (yeah, sure youbetcha') again to take some photos tomorrow after the rain stops. They aren't pretty or smooth to our eyes but the birds are crazy about them.