There are many reasons to downsize, including power costs and considerations, noise, heat, and with the extra efficiency of computers these days, especially mini PCs, you can downsize by upgrading hardware.
Why Downsize?
1. ContainerizationOne of the easy ways to downsize is migrate from virtual machines to containers and containerized infrastructure
Why Downsize?
2. Collapse clustersIf you are running multiple machines in the home lab, you can collapse these down from multiple servers to one server, especially if running containers.
Why Downsize?
3. Use Mini PCsMini PCs are small, efficient, small footprint, and generall quiet compared to servers