For family reunions or large company picnics, make name tags for everyone. You could also make awards, either humorous or serious, to distinguish certain individuals or departments.
Contract with local tourist attractions that have big turnouts in the summer months: zoos, amusement parks or even beaches/park districts. Sell them buttons for resale or make them name tags for employees, button registration IDs, etc.
Make photo buttons for sports team members in your area (little league, soccer, softball, etc.) as well as individual player photos. Photos buttons can sell for $3.00 or more. Parents love them!
If starting an herb garden, label the rows of seeds or individual pots with garden parkers you make with stick back buttons attached to popsicle sticks. You can even cut out the photo from the seed packet to use as your artwork!
Make decorative buttons to mark place settings at birthday tables, baby showers, engagement parties, weddings, and more!