1. Put on gorilla suit
2. Teleport to the ISS for the second time

LocalSend. File transfer between any devices with (almost) any OS over LAN. No account required. The best file transfer app I’ve ever encountered by far.

StreetComplete. Get motivated to go outside with quests to help complete OpenStreetMaps. Surprisingly addictive. Requires an OpenStreetMaps account.

f.lux. Remove the blue light from your computer monitor in the evening to help you fall asleep more easily. Redshift. As above. Not quite as good, but works on some OS/System configurations that f.lux can’t handle.

Pulsar. A community version of the discontinued Atom text editor. Highly extendable and configurable. Great for small programming tasks or opening text files with an obscure syntax. Has most of the packages built for Atom.

Home Assistant. For automating your house and more (controlling smart lights and appliances, monitoring solar panel output, weather forecasts, printer diagnostics, delivery tracking…). A dedicated device (Raspberry Pi, old laptop) is highly recommended. A bit of a learning curve, but hard to live without after using it.

The forum post you were referring to.