I worked as a camp leader over the summer and I was always thinking of craft projects that cost little to no money. One of the crafts that we did was cutting paper cups into flowers and coloring the inside.
If companies printed designs onto cups that could be cut out, it gives the cup a second life. Imagine if there was a different design on the cup every single month. For paper cups, it could be an origami piece; while the designs on plastic cups can be cut out and made into a bookmark or wall decor.
This would give people a reason to save the cups and take it home. It works as a fun activity for families to do. Just simply wash the cup and cut along the dotted lines. This cool design could also attract more buyers and make the place more child friendly.