Great idea for a thread! I've enjoyed reading what others have been up to. Gave me a few ideas.

Tricked out my Home Assistant (HASS) setup (this is pretty much continuous at my house). Added some custom python code and now have about 80 devices connected to HASS doing various tasks. Lights change colors when ring cameras detect motion, when the garage opens, and on other events. Motion detection turns on lights all over the outside. If you haven't used HASS (home-assistant.io), I highly recommend it.

Added an SSL certificate from LetsEncrypt and had a lot of fun trying to point my HASS docker image to that path (outside the container). Took me the better part of a day and I learned a lot about debian docker containers in the process. Now I love docker. Also added Node Red (another docker container) to HASS, and now I'm really dorking it up.

Saw pi-hole mentioned in this thread, so I set that up in another docker container (on a different debian VM due to some port conflicts). Had it working great, then in the process of googling how to trick it out, I realized there's a pfblockerng package for pfSense (my router SW) that does pretty much the same thing, but doesn't require me to open a bunch of ports on my different VLANs to reach pi-hole. So I installed that and just have it listen on every (internal) interface. Worked so well, that the wife actually complained that some of the links she was clicking on no longer worked. Apparently she likes the ads. So I removed the interface from her VLAN (moved her to our IoT VLAN) and set it back to opendns. Too much trouble to add all the exceptions needed for the stuff she clicks on. Lesson learnt. I'll stay on my more strict VLAN and let her hang with the IoT devices.

Other stuff, not necessarily techie in nature:

• Ran some Cat 6 to support two more outdoor PoE Hikvision cams that connect back to an NVR. Boring and tedious, but needed.
• Roughed in and then finished out electrical work in an unfinished basement room.
• Installed a landscape lighting system with Ring transformers (didn't know they were a thing, and was amazed at how cheap they were, comparatively)
• Re-arranged my home office (twice). Considering a new monitor to replace my 34" 4K LG monitor that's 3-4 years old. May go with a two monitor setup, or perhaps a large 5K one (for MBP 16"). Looking at maybe the Dell UltraSharp U4919DW Dell U4919DW, or the next gen LG LG 38NM95C-W . Curious if anyone had experience with either of those.
• Considered buying a third UAP-AC-PRO to enhance wifi, but then decided against it. I think I'll wait for the next gen of wifi before doing anymore upgrades