If it's small enough to boil, get a big pot and a big bucket of ice water. Boil it for several minutes, and then immerse it in the ice water immediately. Do this a lot, until you get sick of it, and let it soak a while again. Then do the boil/shock thing again.
The boiling will open up the pores in the wood, and the ice bath will close them really quickly, trapping water inside much faster.
This will also get rid of a lot of the tannins in the wood, which may or may not be a good thing depending on you perspective!