These are not mine, but I make a different type of door bells. I call my Universal Charm door bells, "A-door-a-bells." I used to hang these on my doors like a merchant door bell that sounds whenever someone opens a shop door to come in or leave.
Or plant some succulents in old drawers? Be still my heart. I really love this idea. The mix of weathered wood, stones and the wonderful texture of succulents speaks to me. I have some old sewing machine drawers that would be perfect for this project.