Tandy’s outlet site has some 12 packs of leather wrist straps with stud attachments on sale for $19.99
IMHO, at less than $2, these would be a good project for an intro to leather tooling/stamping class. I can’t give such class any time soon, but if someone else wanted to step up (@bitta, @Webdevel, or ???) these would be a good-sized project for a starting class.
https://www.tandyleatheroutlet.com/p-705-leather-wristband-wstud-attachment-1-25mm-12pk.aspx