I'm in final leg of building/assembling new music streamer based on atx motherboard along with first and only linear power supply for these motherboards. Euphony operating system with options of using Euphony Stylus, Roon and HQPlayer music players. Tonight first listening!
So, technically not winter project, but this has been plenty enough work, many months of planning , researching and configuring everything to work together!
Already have equipment for next project, enterprise grade managed router/switch with plans for LPS to power, this will bridge over to wifi router. Duelund CAST PIO tinned copper to replace Audyn True Copper Max in crossover will be another winter project.