The only computer holding your sensitive photos and intimate thoughts should be your own, and the only person with access to it should be you. The Raspberry Pi can be used as a cloud storage alternative.
Biohacking is a world limited only by imagination, technological constraints, surgical risks, and the unfortunate trend towards the criminalization of body modification procedures in certain jurisdictions. Of these, it seems that imagination is the factor holding back would-be biohackers the most.
Rabid fans in England have taken the battle from the stadiums to the internet so they can keep watching their beloved teams.