I made a sampler out of denim, different colors, 9" blocks, nothing too complicated - moon over mountain, rail fence, flying geese, card trick (with 3/4 square each instead of piecing), raw edge applique, 4 patch, 9 patch. Several whole pieces in different colors of denim. Several with pockets on them, and a handkerchief in the pocket. One square with the zipper, and underwear behind it. I thought of putting a shirt top with color above that like a dickey. One flag block with the stars and stripes made with bleach. If you don't have different colors, you can use the back side of the denim.