To finish or not to finish

In 1992 I took my second Nancy Crow workshop. It was at the Museum of the American Quilters Society (MAQS) in Paducah, KY. We were to bring our favorite block pieced in black and white in 2 sizes. I took Lady of the Lake which is only 2 triangles for pattern pieces. When we got there we were supposed to design a block with those pieces, which we could subdivide into other pieces. I worked and worked and worked trying to get a neat original block (exercise 1). Finally Nancy said she wasn't happy with what I had (and neither was I) but I needed to use it and go on to the second exercise. With this second exercise we were to take all neutrals, black, gray, beige, and white and create other values within the same design as the first one which was only black and white.
From there we progressed to color using exactly the same values as in exercise 2 and colors we wanted.
I pull these pieces out every once in a while and look at them and try to decide whether to finish them into something. And then sometimes I think they should go on the back of a quilt, and some days I wonder if I should do anything at all with them.