I made simple, minimalistic stackable boxes in 2 different heights, 4 cm and 3 cm.

The title says 17cmx12cm, but these are the sizes of the room themselves. The wall thickness is about 2mm, so the total dimensions are 17.4 cm x12.4cm x 3.4 cm/4.4 cm.

Perfect to store in your drawers and hide those cables from sight.