A review for 2.25" Round buttons by Drew M. Talley.
I cannot imagine an easier way to make some kitschy buttons for a one-time event (or something ongoing). The low price and ease-of-creation, plus fast help with the template and quick production/shipping, combine to make it a no-brainer for a small run of items for a classroom of students, for a fun event, or...well, whatever. I know some people were making them for their university departments, so their graduating students would be identifiable as to their major during graduation.
I am a big fan.