This is a slightly different version of the official command strip mount for the Multiboard (as of March 24).

It has two push fits, that have been slightly scaled down (x0.975 on x and y axis) to generate a less pushy fit. This way it is easy to mount and remove the tiles. The push fits also have been elongated (x1.1 on z-axis) to make it come flush with the dual and quad snap connectors (link below).
To fix the tiles, one can use the 9mm flat head small thread bolts (link below).

The two push fits fit into the standard clips horizontally or vertically. I also made another version that fits diagonally.

The base of the model is 4mm think, which adds to the 4mm of the strips I use to have the standard 8mm offset.

Print the part with the base down. This is not super high strength due to the layer line orientation, but I figured the command strips will fail first. Standard settings are fine. I used 3 walls as in all Multiboard prints (but that is probably not crucial).

link to Dual and Quad Snap connectors:

https://thangs.com/search/%22MB14%22%20creator%3A%22Keep%20Making%22?scope=thangs&view=compact-grid&affiliateCode=tnl

https://thangs.com/designer/Keep%20Making/3d-model/Quad%20Snap%20Connector-974291

link to 9mm flat head small thread bolts:
https://thangs.com/designer/Keep%20Making/3d-model/9%20mm%20Small%20Thread%2C%20Flat%20Head%2C%20Bolt-974190