This is a short list of the technical projects I do in my free time. Although I have to say that I try to keep those to a minimum and rather spend my free time with my kids, with woodworking or taking care of my Beehives.
MQTT based Arduino Sensors
Mainly used to gather temperature, humidity and other environmental data around the house and display it in a nice Grafana dashboard.
You can find the source code for the sensors here https://github.com/kaitimmer/mqtt-sensors
Because at one point I got really annoyed by the Google advertisement I went looking for alternatives. Besides using DuckDuckGo I also did setup a searx instance which I use regularly as a meta search engine with a lot of customization options. It might not be as fast as the usual suspects but the search results itself are really good.
You can try it out here at search.kaitimmer.de