How do i make/get dividers for tubs?????

I need to make a few dividers for my new rack i made. They are 27qt rubbermaid maybe sterlite tubs. All i need to do i make two of them i might just use the lids that i don't need cut them to size and duct tape till my heart desires. What would you suggest?????????????????? And what kind of water dishes for a small 15 or smaller tub? I don't want to buy them off the internet i don't care what they look like, and ideas?

I suggest less question marks! :D

No suggestions for making dividers, although RBI sells some that fit his tubs.

As far as water dishes, I use the small animal ceramic bowls from petco.