Repackaging the mbsync and Dovecot setup from Parts 1 and 2 into a pair of Docker images, configured entirely through environment variables.

Running XMCOSY+ outdoor string lights fully locally with Local Tuya, template lights and Node-RED, keeping colors, scenes and brightness.

Designing and 3D printing a wall mount for a 2015 Amazon Fire tablet as a Home Assistant dashboard, with the cord hidden in the wall. STL included.

Pairing Zigbee devices caused the ZB-GW03 to reboot under Zigbee2Tasmota. The unofficial tasmota32-zigbeebridge firmware fixes it.

A pair of Tasmota rules that work around the ZB-GW03 failing to reconnect to Home Assistant's ZHA after a power loss.

Adding self-signed SSL certificates to Dovecot and installing Roundcube, so the local mail archive is reachable from any browser on the network.

Automatically backing up a remote IMAP mailbox to a home server with mbsync, then serving the archive locally with Dovecot so any mail client can read it.

Using a Flirc USB IR receiver to turn old infrared remotes into Home Assistant controllers via keyboard events.

Playing a door chime through a speaker plugged into the Home Assistant box itself, using the VLC add-on over telnet.