I’ve been in bed sick all day with a terrible cold and my sinuses are packed solid.
I had a headache and so out of bordeum tried using my black and decker buffer to massage my head and relieve my headache (I use the buffer as an awesome massager and modded it with a variable speed switch).
To my surprise it worked on the headache and also liquified my sinuses.
A quick google search turned up a few other people playing with vibrators for congestion and at least one patent.
Funny to come across this after experimenting with getting solids to behave at liquids via vibration all day.