Yes, I got the humidity/temperature sensor from seeedstudio (http://www.seeedstudio.com/depot/electronic-brick-indoor-temp-humidity-sensor-p-683.html?cPath=48_52).
I got no idea how accurate it is, but it only jumps 1% up and down when close to changing, and that is close enough for what I am going to use it for.
Actually, I don't even need to know the actual humidity, only notice the change in humidity, so it is plenty for my project.
Only "problem" I got with it, is the code to read it... My problem is that I don't understand it 100% and any attempt to simplify it failed so far.