Run warm water up your nostrils in the shower. Sounds gross, but it cleans out the sinuses nicely. The other thing I find useful for blocked nose is swimming in the ocean for a while, the salt water clears things out. I have issues because a lot of cold medicines have pseudoephedrine (over here they do, at least), which makes me twitchy and won't let me sleep for about 6 hours.

Come visit us at RenderGods.

Ignore the shooty dog thing.