My PlayHouse is all about High end Enterprise Server and Storage equipment. I run quit a bit of a data center in my House, with a hundred plus servers, on and offline. I like sharing the hardware and what I know about it.
I am a big fan of Lenovo / IBM servers, and so those are often a big part.
My PlayHouse started with me working on my old house. I do not do that as much anymore, but sometimes I still do.