Using cookie cutters to shape pretty much everything results in leftovers. Here are some ideas for using up your offcuts:
Hide them! Small bits of chicken/ham/cheese can easily be hidden under the original shape you cut. Easy!
Repurpose them! Leftover bits of cucumber or fruit? Make a small side salad to go with your meal. I typically use silicon cupcake cases or small bowls for these types of sides.
Kebab them! Multiple leftovers? Pop them on a food pick or small skewer.