Top of my head.. 1. Personal data center in space 2a. Crypto key server in space 2b. Secure communication relay / secret storage in space 3. Blockchain-esqu

Top of my head.. 1. Personal data center in space 2a. Crypto key server in space 2b. Secure communication relay / secret storage in space 3. Blockchain-esque "decider node" in space 4. 24x7 satellite view (geosynchronous?) of given lat/lon 5. Other signal related stuff (find precious metals? find underground tunnels? find meteorites?) 6. Space-related service biz (w/ larger payload) - manufacturing nuts and bolts, seals, other consumables, sell water or something precious needed in an emergency in long term space craft operations 7. Sentimental / stupidity-driven - your DNA in space, your ashes in space, your terrarium in space