Oh I see now what you want. Well, I know your situation is different but like me, when I am making up my Jolly Ball toys... I have a very large tray which actually use to be from a cage tray and I have most all my parts all just mixed up in it which you can see below. I divided a small section towards the front to give me clearance so I have a place to lay my toy as I work on it. This tray measures 30" wide x 23" deep x 1-1/2" high. I also have other shallow tubs off to my right and left there on the table where I work. Then when I am not working on my stuff, I cover the with plastic and the tubs have lids. I am certainly not one for sitting on a floor to work on anything, I'd much rather be sitting up on a chair.
So even if you just wanted to mix everything it is doable then it is like going on a treasure hunt to find what you want. I know I certainly could not possibly have a compartment for each and every toy part I have.