This layout is caused by an encounter we ran with 33 pupils from two high schools of Ioannina, Greece. Pupils were requested to design most of them carrying messages in braille language, creative artefacts. The items are subsequently shared with blind kids in order to use 3D printing as a means to create a fresh medium of cooperation between non and blind -blind people. The experience so far has been really favorable!
You can read more about this encounter on its dedicated website