So cute! I have had great results with copper coils around a chopstick stuck in my houseplants, they double in size in couple months, and keep growing!
I've made these with our library as take home kits as well. We did them a little differently, but I'm glad to see your way as well. The variety is great, both with a beautiful project at the end. Nice work!
There are many other ways to make these using tools, threaded rods, and big hole beads. Your finished product will be nice and straight. Browse RU-vid for more ideas!