The message
from Mark contains these words:

The cupboard will have shelves used for storing children's toys.

Make the shelves the right size to take easily obtainable plastic boxes.
It increases the amount of stuff you can put in there, and makes it
easier to get the kids to tidy up if you pull the box for the Lego out
and say "Put all the Lego in there" instead of having to get it in the
cupboard.

Ikea do rather nice drawers on plastic runners which are intended to fit
into several of their wardrobe units, but they sell them seperately too.

--
Skipweasel
Pay no attention to that man behind the curtain.