STORAGE BOX CLANE LOW-SLIM WH

I use it together with the low type. I was having trouble finding somewhere to store it, but when I put the lid of a large Tupperware container in it, it cleared up the space nicely.

I use it to store things under the sink, and it's just the right size to put spare toothbrushes in. It's also useful when you can't use the dividers to organize small items.