There has been talk about making a writer that saves documents. To make one is the challenge. Put the id of it in this forum and I'll pick top 3 based on a 1-200 point scale
Now an idea i had is using either filt writing from a machine or using phot memory both of which can take up one corner of a document and write a whole paper. Now feel free to use ideas and begin!
Not my creation, but you might want to check out id:2201761 by mad-cow for an idea of how this mass photon storage works.
Yep that's where I got photon storage idea