We launch over a thousand weather balloons per day?
EarMaster
I also have several of these as a replacement for some Tuya sensors I added a power supply to because they ate through batteries. The Sonoff not only has a way better battery life, they also feel and look nicer and the readings are far better. The Tuya sensors were all off by several degrees and the Sonoff are way closer to the real temperature. I cannot recommend them enough.
Also: mains powered devices (lightbulbs, smart plugs, zigbee repeaters) will all act as a repeater in your mesh. Depending on your home it might help to add in a few of them. But keep in mind that this will not magically make your existing devices use them. When setting up your network always pair your permanent powered devices first so they can act as endpoints for your battery powered ones.
For the power state monitoring I can recommend this blueprint, which does everything for you (and maybe even more): https://github.com/leofabri/hassio_appliance-status-monitor
Titanfall 2 is a great shooter and story game. Don't bother with Titanfall 1 if you are only in for singleplayer as it is multiplayer only.