I have been trying to get into the habit of cutting the scraps up right away into whatever size strips or squares that work and then I keep them in individual shoe totes with the sizes marked. Any of the selvage ends or small strips I put in a bag and give to my granddaughter to use in art class at school. The younger grades sometimes paste strips on paper to make a design. Otherwise the long selvages can also be used to tie up plants in your garden.