love rainbow peepholes
They are wonderful. I have been using them for decades, usually buying around 500 or so per year. I give them to kids, people who have helped me, as part of tips at restaurants and stores, to school kids who visited our science department at the university where I used to teach (before retirement), as part of children's messages at my church, and as Christmas gifts to kids, especially relatives. I almost always have some with me wherever I go. The vast majority of people to whom I give them seem to really like them.