Custom front case for the null 2 kit available from https://www.tindie.com/products/Ampersand/null-2-kit/
more info @ https://www.null2.co.uk/
For this modification, you need to remove the speaker grille, or the rubber pads from the speaker grille, otherwise the case won't fit.
The rest of the stl files for the case are available here:
I used original buttons from the dslite.
I printed two 5 mm wide and 1 mm thick disks for under the start and select buttons.
I also modified the rest of the buttons, the original might be a tight fit.
I also added optional fillers for the dpad and abxy, to reduce travel.