Do yourself a favor and invest in a button making machine.
Precut the circles with the circle cutter (You may have to buy that separately). Teens can draw right on the circles. OR
Measure the circle on Adobe Draw and allow teen to draw it digitally. Print them and make them into buttons.
Button makers are about $225 but you can make the case by using it often and it basically pays for itself!
Don’t have a button maker and can’t afford one? Make magnets! If you have a non-heat laminator, you can probably purchase magnet sheets to turn anything into a magnet. You can also purchase magnetic sheets to stick on paper.
Simply do the above activities but turn it into a magnet campaign. Teens can make a bunch of magnets with positive messages for social change and stick them to lockers at school.