I bought on of thos rolling carts from JoAnn's, with the different colored drawers. It's the shorter one with side by side drawers. Yup, the red threads are in the red drawer, green threds in the green drawer and so on. Not super tidy in the drawers, but very easy to just pull out the drawer to pick my colors.
One drawer has my varigated threds in it.
It works for me.