Finally my Copic storage is perfect for me and it's all because of who shared these awesome blue canvas containers from . You can fold the edge down if you want it smaller or roll it up if you want it taller. 6 fit perfect in this IKEA cart.
RASKOG carts from IKEA - spray painted after they were assembled using the rustoleum paint in "ocean mist" for the mint and plastikote paint in "cameo pink" for the pink cart. Spray paint some plastic containers to match using a plastic primer beforehand.