I agree with Harmony - place setting mats are popular, they dont have to be more than about 12in square - I make sets of 6, or 8 for Christmas ones.
I also do spectacle cases, tea cozies, small wallhangings for children (just fused applique which is quick), needle cases, pin cushions, bookmarks.
And any wallhangings with cats as subjects always go well - I do them about 30in square.
Adjust a tote pattern for little bags for little girls, they love them.
I have made coasters to match the tea cozies which are popular.