Coffin light switch box. I only remixed the Tall version.

I've added the .stl, .3mf and .gcode files. 

I used the following settings

Wall line count: 4

Infill Density: 15%

Infill Pattern: Lines

Support: Yes

Support Pattern: Grid

Support Wall Count: 1

Support Density 6%

Skirt- Use brim if you have warping issues.

Supports are super easy to peel off when set to these parameters. Keep in mind the printer I use. Your mileage may vary, depending on what printer you have and how tuned it is.