Towards a Do-it-yourself-Internet of Things

I'm quite happy about my recent purchase of Sonos, an always on network stereo, that streams music from any source (NAS, internet radio, etc.) to my home without requiring a computer. For me it's the first embedding of streams into my physical home.
Simultaneously, I'm quite proud about the doll's kitchen I build for my daugther from standard components you can get in a hardware store.

I also have a couple of ideas concerning improvements of the Sonos interace, coupling of my Sonos with location information and alike. I'm wondering how long it still takes until laymen can build and extend Internet services embedded in physical environments using standard components and tools - similarly, as I could for building the doll's kitchen. Probably still along way to go - that's why we're submitting a project proposal about that to the EU today...