Do some good with the school 3D Printer - those signs could use some braille for the visually impaired students, and there's no harm in teaching the sighted students how to read braille themselves...
I did this out the hard way in FreeCAD; 2 layers, filleted the braille.
Students participating in this will gain a basic knowledge of braille, while making the school campus more accessible.
With the proper parametric setup, even an introductory student can make these signs - but for a challenge, advanced students could print these in alternating colors from scratch.
The text of the sign and its [i]proper[/i] braille translation will be needed for each sign - watch that last bit like a hawk, I would definitely have snuck in a braille fart joke if I didn't think the teacher was paying attention.
- Measure the sign to be made/replaced
- Sketch out a rectangle (or other shape!) to be the base
- Pad that rectangle to whatever depth is desired (0.1" is pretty thick)
- Add another sketch with the text and braille
- Pad this out appropriately
- Fillet down the edges of the braille. (You can chamfer the text as well if you like)
Students gain an appreciation for braille and a rudementary knowledge of what it looks like and what it does; your campus becomes a little bit more friendly to the visually impaired.