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You might do them as decorations for a ceremony or celebration with the end result that they are donated somewhere. If each patrol only makes one, there could be a question at the end who gets to keep it. Or - from the start, let them know that they will be raffled off somewhere for a fundraiser.
OH my, these are adorable. And unlike so many "ibles" they take very little high level skill and cheap materials. This would be a great project to do with your kids or a scout troop. I think I'll make one and for Halloween, I'll put a big pumpkin in where the planter usually goes and then either light it or - put a plant inside. They can be so "seasonal" - Thanks for a cute, VERY well explained Ible.
That would be fine for starters, but Ewap has done a much taller version which would protect your plants longer and encourage taller healthier plants. Notice the size next to the railing on his porch. Also, each pot is a fairly large one so each plant would have more room for root growth. VERY Nice instructible using a bit of our latest techno toys too - simple 3-D printing. Double Kudos.
I'd imagine the pros don't want to do it for OTHERS, because if something happens to the piece, they don't want to be responsible. I'm sure they do it for their own pieces. This is an excellent explanation of 'how to' and the cautions involved. If you have a piece that needs care or it needs the trash, this is a great in between choice. I've used the tips and they do work, just not on everything. I brightened a very pretty, but very stained old flower pot with no ill effects. Another old dish - not so good, Thanks for the great ible.