Braille!
cults3d
This is still a work in progress but the MakerBot actually seems to print braille rather well. I can't read braille so I can't judge for sure whether it's readable but it certainly seems like it. The trick is to get the G-code right to prevent warts on the front face (i'm still fiddling with this). I think this might have a lot of potential. A braille bracelet will be next in my printing/designing queue.
Download Model from cults3d
With this file you will be able to print Braille! with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Braille!.