This is an oldie but a goodie. I first came across a project like this when I was researching how to use an ATMega1284p with the Arduino environment, and found maniacbug's website detailing the use of an RF transceivers to place tiny sensor nodes all over his house (1). I tried this, but had range and noise issues using the same hardware and presumably similar code. Essentially, I hope to make something like that with Oaks.
I feel like the Oak was born for this sort of thing. Take a reading, send it to a home base, go to sleep for 5 or 10 minutes. I just hope I can get things like the DHT or TMP36 sensors working with the Oak. I hope to use this same kind of thing to detect dangerous cold spots in the house before my pipes freeze. Any input on this is welcomed!
1.
https://maniacbug.wordpress.com/2012/03/30/rf24network/