A couple snaps for using Multiboard pegs in openGrid boards. 

Normal and lite versions are provided.

I designed them for using mi hooks with openGrid, but it can be used with any attachment with Multiboard peg connexion.

The final structure of hook + snap +board is really stiff and can handle quite a weight.

https://makerworld.com/en/models/873859-multiboard-hooks

Thanks to David D for the openGrid development.