I tried 2x designs on Thingiverse but found they were either too long or the walls were too thick meaning it hit my print head, so I designed my own.

The idea is to block the annoying red light coming from the BL touch, as there is no way of turning it off. The part is a friction fit. There are 2x versions, one with an arrow and one without, use whichever you prefer :)

Printing in black blocks out all the light, but lighter colours may let the light through which could look cool.

I recommend 0.1mm layer height so the arrow comes out nicely. I also recommend printing with a brim as the bottom does not have much surface area.

15/08/2021 DESIGN UPDATE: Added some small tabs at the top to help it click into place and stop falling off.