I would even suggest for some of you groups above consider wooden coins - We use them as well - Same principle a lot less cost. @dougiemac Example of some wooden ones
You could but a SET coin would all be the same so not much swapping. Usually we give them out to hard chargers as recognition for their work. Also swap with other units you have worked with or deployed with etc etc.
Yup better not be without if coin checked. Most of the ones I get we sell for like 10 bucks, which still allows monies to be raised and still be affordable.