This is the close up view of how my drawers work with my cage. Everything is zip-tied like crazy except for the mesh section. The blue grids were initially just snapped into the mesh connections. However, eventually I decided to go ahead and zip tie those as well, which allowed me to slide the cage around for vacuuming much easier. When I moved the cage to the bedroom, I just cut the zip ties off and moved the bottom section separately so I could get it though the door.

You can of course use regular grids for the bottom, we just had spare mesh grids and used them for looks.

The drawers are just the cloth ones from Target, the larger ones rather than the smaller ones.