Montessori natural outdoor space: Spiral Fence Marbles - Drill smaller holes all the way through, then larger holes for the marbles that don't go all the way through fence so the marbles are countersunk on one side. The marbles won't fall through the fence. It looks beautiful when the sun shines through.
Oh my goodness, this is adorable! Drill little marble sized holes in the fence, put a little glue on each marble, and shimmy into the hole. This photo is what it looks like on her fence when the sun hits it - so, so pretty!