DYI Ideas for Breading Bins

I have two mouse colonies set up right now and looking to expand once I can sex the babies I have.

I don't have the room for a giant Rodent Rack set up, and I can get pretty crafty... what do some of your DIY breeding boxes/ideas look like??

https://www.homedepot.com/p/Sterilit...8960/203120094 I was thinking of using these but many of them to build the rack system to start.