Hi Glitched0xff,

If you are a diyer you can buy many St Modular panel/pcb set here:
https://www.3u-shop.de/

There is no 0hp module in this shop but maybe if you ask you can find some clue to buy them somewhere else.
Riccardo is very cool.

If you want built modules you can ask RTFM, a modulargrid member.
Pro builder from Italia.

Cheers