I've cut out a set of different size spacers, which can be used on the edges of a drawer to fill the space between the grid and the drawer sides so that the grid does not move around.
The spacers need to be attached to the base grid using the snap connectors of @Neel_18926 base grid.
The file contains the following size spacers:
The author remixed this model.
Cut the actual base plate away to just leave different size spacers attachable with the snap connectors.