Cottonwood Branch
After I became desensitized to the sticks Zach would place in the ornament-hole, he tried a whole portion of tree. After a particularly violent thunderstorm, there were numerous cottonwood segments on our lawn. He stuck one in there. It was pretty big. I let it remain, and even drove somewhere with it. After a day all the leaves had shriveled and all the cotton pods were open, strewing seeds wherever I drove.