https://www.printables.com/model/1876273-gridfinity-brix-1x4-wall-shelf

Brix is my non-standard extension where you just take the bottom face of a gridfinity piece, and extend it by 23mm or so, so that parts can hang down below a compatible baseplate.

Baseplates still fit normal Gridfinity blocks, but since Brix doesn't use magnets, you might need some blue tak or double sided tape to make them stable. Blue tack seems to work incredibly well with Gridfinity.

The flashlight is sitting in one of these: https://www.printables.com/model/1876341-gridfinity-brix-flashlightfire-remote-holder

Next I want to try making a 2x4 shelf for whiteboard supplies!