I got to thinking IF you are a crafty person you could order a kit and make them yourself.
Here is a link from Amazon but you could probably find other links or go to a craft store.
https://www.amazon.com/Snap-Craft-Inch-Round-Buttons/dp/B0042SUMZY/ref=sr_1_12?crid=2VVPUTOJVFJHJ&keywords=special%2Boccasion%2Bbuttons&qid=1699987007&sprefix=special%2Boccasion%2Bbuttons%2Caps%2C213&sr=8-12&th=1
Thanks!!! Never thought of making them I’ll let you know