I think you hit a homerun with the airfreshen! I am so used to it now that it is a daily routine. I will be getting more of the airfreshen when I order next. I got the small dome and the sound is hardly noticable now and my wife sleeps with no problems, I would personally like the larger one but she is a light sleeper.
for 2012, maybe develope more of the airfreshen type products that will knock our socks off.