Crafts would probably do good, but I would do a snack stand with coffee, donuts, baked goods, and sodas.

for more garage sale tips check out

There are a bunch of Craft Ideas and directions here:

Craft Kits -

Other ideas are to make pet treats

Dog Treat Recipes -

Or if you are into organic these are directions for organic recipes that could be a great craft.

Organic Recipes -

Have fun!
HTH

Well you could make:
1. Signs ( that say a family name, or welcome, or occasions like birthdays, you know taht people stick in the ground. Or hanging signs.)
2. You could bake goodies.
3. You could make Holiday magnets ( Ex; Halloween. Take plastic skeletons, glue or stick a magnet to the back- strong enough to hold the item up- and there you go.)
4. You could make little animals ( Out of pom poms, sticks, clay, ect.)