These are genius! Makes you think “Why didn’t I think of that?”.
When I was student teaching the students had a Friday journal where they would focus on their writing and part of student’s grade was creativity. They had to decorate every entry according to the topic and surprisingly 99% of them loved this. My co-op had a box full of stamps they could use to decorate with and this reminded me of it. I’ll be making these as soon as I gather up enough bottle tops.