Sounds like you have a great scrappy quilt in the making. Not knowing the various sizes, etc. that you have I'll just throw out some ideas. You really need to have them on a design wall so you can move them around to find a design you like. I can see clusters clusters of small ones (2-4), etc. next to a larger single block. Some can be on point and some not. I think a solid color, black or deep navy blue, for sashings would be good. Hope this gets you started on some ideas. It will be fun to see when you have it done.
My design wall is the same, a flannel sheet tacked to the wall. Than... when I need more space, I pin the blocks to it and tack another sheet on top. I've one project which has been waiting for me to applique the center medallion.
Let me tell you about an easy portable design wall. It is called a vinyl tablecloth that has a flannel backing. I buy them each change of holidays, Christmas, Thanksgiving, etc. They are usually maked way down. I carry them to retreats and just tape them to the wall with painter's blue tape(no marks left). You can put them over a door way if you do not have a wall. The blockes will stick to the flannel side just great.......Hope this helps you.
I know a number of people who do this at workshops, and they can just fold the tablecloth up (or roll the tablecloth around a large tube), while the blocks are still in place, and take it all home, already arranged, to work on it there.
I second the dark solid color - it can quiet the chaos. I would take my smaller ones and do a tilted setting to bring them up to size with the larger ones. If they are really small you can just run them by two's in a veritical setting beside a larger block. Just play till something looks good. You could add 4 patch blocks in with it.
Have fun. I too have a collection from keeping my connected corners. Someday......