Talk introduces my little Nextcloud zoo and the https://privat-in.de web site. Those little SBC boxes have a good concept to store data securely and are ready for backups. I'll talk on the data storage concept used and how it's supposed for mutual (peer-to-peer) backups.
On top of this, you can install Nextcloud using NextcloudPI. To make the setup easy for normal people, one can reach a personalized little box from the internet via HAProxy with SNI redirecting to a personal Wireguard tunnel. This setup is suitable if your provider gets you behind CGNAT or MAP-T or in cases you simply are un-able to configure port forwarding yourself. The plan is to make money for my local hackspace offering (payed) courses to people e.g. how to master those little beasts, how to link your smartphone to them, how to use a password manager, and how to secure / restore your backups.
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