So the engineer in me sees a couple things here. You could have someone local sew the fabric cheap and then assemble them yourself. You are going to want to have the wheat or seed in a plastic vessel to prevent moisture from getting into it. Mold and germination are potential issues. I would look at plastic beads or even ground walnut shells instead of seeds or wheat.Actually looking at wheat, there's really no difference between that and birdseed for my purposes. That should be fine.