I used Filip's Template (on Printables) to create a 2x3 gridfinity holder for 4 assembled Bambu Lab hotends and 4 “hotends with nozzle” for X1C/P1P/P1S.
Gridfinity by Zack Freedman: https://www.youtube.com/watch?v=ra_9zU-mnl8
I originally posted this model at Printables.