Tartan, if you like your ruler set, you would like those books by Karla Alexander. Same concept but from before rulers, you draw out your own grid.
One of the ladies in my Tuesday group brings HST to work on, she has been using up her tiniest scraps. I think the concept is to have tiny little 1" HST in the center and gradually work bigger up to about 2.5" around the outer edges. I think she is nuts! Week after week for two hours at group she trims them down. She has some interesting square tall acrylic boxes in various sizes and once the block is trimmed it is put in the box stack. She doesn't have boxes for all her sizes but I have to admit, it's lovely storage for a long term project.