There are matching half height drawers.

This is a remix of the "1x1x1 - Topped Multipoint Rail - Multibin Shell", to allow half height drawers to be used with Multiboard.

There are 2 versions, the "Stopper bar only" variant does not have provision to use the "Drawer Stopper - Outer Corner Pin", as there is a wall in the way, but does not compromise the strength of the side slot. You must use the "Drawer Stopper Bar".

The "Stopper Outer Corner" variant has a cutout so you can use the Outer Corner Pins, but may compromise the strength of the top of the side slot (however it's unlikely this will have much force on it as this is designed for drawers, which will be mounted from the back).

(There maybe a better way to do this with Multiboard/Multibin, but thought I would publish what I've got at the moment as it's working for me...)