Mine are organized by:
1) Project complete with pattern
2) Color - solids
3) Color - prints
4) fabric stash to sell
And those are on racks attached to the wall like you used to see at some Walmarts ( We bought some when they were remodeling a couple of years ago.
THEN
I have a chest of plastic drawers with smaller pieces according to color
THEN
I have tiny pieces in open plastic bags according to color.
I also have projects I am working on each in their own plastic 12" x 12" box with pattern.
Phyllis
QuiltingGrannie
Quilter's Pantry