I have a plastic bin that is my scrap bag. Some if my scrap bag quilts are chosen out of this. If the block is a two color block, I try to get them paired up out if my scrap bag. Now, all of the leftovers get cut into 1.5" strips from 1" to ?"'s. sometimes I get lucky and have them WOF. These are going into several of Gylene Fitzgeralds Pineapple trash blocks. I am in love with these blocks. They are so easy, fast and make a gorgeous pineapple quilt that is as easy as a 9 patch.
So, I guess I control most of my scrap bag quilts except for the pineapples. I rarely go out and buy for A quilt. I do have to buy neutrals. I seem to go thru those faster. I just made my first quilt using many different neutral backgrounds. It was hard for me as I prefer the same background throughout the quilt. However, it turned out great and I like the older effect it gives to the quilt and the neutrals all came out if my scrap bag.