At the Guardian, a funny selection of writers' reflections on how they fend off blocks. (I'm with Jane Smiley--a hot shower is always a good idea...) Though there are some other rather fascinating details (Jake Arnott's grandmother was a small-amounts-of-chocolate-eating showgirl in Paris? Douglas Coupland sees a trainer five times a week?!?), the best one by far is Nicholson Baker's (earplugs):
Some years ago I bought an industrial dispenser pack of 200 pairs of Mack's earplugs from earplugstore.com. Mostly, though, I buy them from the drug store. Recently, Mack's began offering them in orange, which is less disgusting than white.
I can sit anywhere, in any loud place, and work. Everything becomes 20 feet farther away than it really is. The chirping, barking, jingling cash-drawer of a world is out of reach, and therefore more precious.
You must have a good seal. When you unstick your thumb from a jammed-in plug, your eardrum will make a tiny, silent cry of pain, like a word in Arabic. Then you know you have a good seal.