The papers like the first signing of independence of America (or any country) with images, or some important document which expose the Nazi deeds and what not. I am not sure if this would be relevant or not but could be another good project OP can think about.
We are looking at several megabytes of data to be inscribed into the blockchain with this method, so you should consider the potential fee spikes your minting will have on normal transactions in the process. Even if its just text data, it's not like you can encode a 100KB text file into a transaction cheaply anymore so that would have to be split up into 100, 1000 transactions. It is better to use RGB or Taproot Assets for this purpose.