Your scrap quilt is going to be fun and beautiful.
I know what you mean about them growing like the "Blob". I have 12 drawers that are 12" x 12" x 7" of larger scraps sorted by color, 2 shopping bags of odd strips (one light, one dark), 2 blanket bags of smaller pieces ( one light, one dark). I have made 3 queen size tops and have 3 more in the works of scrap quilt and have barely made a dent. Oh, I forgot the box of hst's that I use for beginners and enders.