I know what you mean about scraps accumulating. I am trying to get a handle on mine now that I was gifted an
Accuquilt cutter and I'll swear they must breed overnight. I try to cut the biggest block I can from the fabric and then work down from there and put them in plastic shoe boxes according to size. Will deal with color separation later.
When I get down to pieces to small to cut a block from (I go down to 1 1/2 in) I either build fabric from them by sewing all the pieces together in random order and then cut a square or whatever I want from that. the pieces that are too little to even do that with I put in a pillowcase to make a dog bed for the pet shelter, so basically I don't throw anything away (probably should). I use a lot of the scrap blocks and pieces for our small quilt guild who makes quilts for people who have lost their homes and possessions to fires. We are strapped for funds as our ladies are elderly and on limited incomes, so we have to make everything count. Sometimes the scraps come in handy to use with items people have sent to us and that helps as well as to getting a top completed. I find the plastic shoe boxes from Walmart for 97 cents work the best for me. You may have to experiment to see which solution you like the best for you.