Strav's blog

How to copy a building from one Minecraft World to Another EASILY WITHOUT Structure Blocks (2020)
WorldEdit 7.2 Documentation

One thing I haven't been able to get working on OPNsense is automatic name registration between DHCP and Bind.  Here are some reference links.

DHCP registration with subzones for multi subnets
Bind and dhcp (rndc)

Multi Sensor
Best multi-sensor? DIY and finished product

PIR Motion Sensor

Switches
Combo Speed Fan Controller/Dimmer with Tasmota - How to Flash Shelly devices with NO wires!
The Treatlife Esmlfe Tasmota Fan Controller

4 Ways to Back Up Your Entire Hard Drive on Linux
How to make disk image with dd on Linux or Unix

MHDD is the most popular freeware program for low-level HDD diagnostics