Storage for on the go that can be kept horizontal
Anyone have a good storage choice for markers when you have to move them around, but can also be kept horizontal when not in use? I don't have a desk so I'm carrying them around when I want to color. I've seen plastic storage tubs. And of course the black bags they come with are great but I have 3 different sets and would love to combine them.
Does anyone have any good storage suggestions?