You don’t even need that. Just a decent dust mask that seals over your mouth and nose that has an exhalation port on it, with the nitrogen inlet fitted in place of the dust cartridge. You need a dust mask that has a one way flapper valve over the inlet, which most do. Here’s an experiment I did as an emergency fresh air kit: Fill a large wheelie bin garbage bag with air and duct tape it closed over a 1 inch pipe. Attach the pipe in place of the dust cartridge with duct tape. Put the mask on and breath normally. The bag will deflate over about 15 minutes or so, depending on the size. I noticed no breathing distress like I was getting co2 buildup. If you fill the bag with nitrogen instead of air you have a death machine for $15 in parts. 15 minutes is plenty of time.

Oruxmaps is pretty good too.

No.

automaton — Noun: 1. A machine or robot designed to follow a precise sequence of instructions., 2. A person who acts like a machine or robot, often defined as having a monotonous lifestyle and lacking in emotion., 3. A formal system, such as a finite-state machine or cellular automaton., 4. A toy in the form of a mechanical figure. https://en.wiktionary.org/wiki/automaton

I said automaton wrong for years. I said auto-maton instead of au-tomoton. I still cringe a bit thinking about it :-/

Ferrock is an interesting new development. Stronger than concrete and absorbs CO2 when curing.

That’s UBS, Universal Basic Services, one possible alternative to UBI, but more likely, we’ll end up with a bit of both, I think.

OruxMaps is an awesome alternative to Google maps. It does require some configuration to get Google imagery working since they were required to remove it, but there’s also a huge variety of other online sources it can use (wmts etc), plus off-line maps, overlays. You can use your own maps from qgis or other gis software, and there’s multiple navigation options. Tracks, routes, way points, and so much more.