I like drift wood that is attached to a slate. It appears more natural to me because it looks like a trunk of a tree. The two pieces I have in each of my tanks appear to be coming out of the ground naturally. In my opinion this is more natural in appearance and in some cases makes a big visual impact without taking up a lot of space in the tank. In both of my tanks with wood, the fish can swim all the way around the wood.
I've bought my driftwood from various shops, I always tend to look around for stuff that I might need in the future. You could make a peice like this as well, you'll need a peice of slate at least 1/4 inch thick. You'd have to be able to make at least a couple of holes in it. Then cut one side of the wood to make a flat surface and screw the wood to the slate. I don't think most people have the slate and tools at home to make this, but it would be fun.
On another note, we are in the nano tank forum. I haven't and probably won't put any drift wood in my smallest tank, 4 gallon. I have never seen a peice of wood that would look natural in there. I think when you start to get to tanks of less than 10 gallons it becomes increasingly difficult. I've read somewhere that people search for and collect rocks that are small, but can be used to make an aquascape appear much larger. In fact, people have paid a lot of money for rocks that are very detailed. I would suggest that finding the right peice of wood for a nano tank could take on a life of its own.
4g planted, 11 watts CF, DIY CO2, Flourite, 1 shrimp, hair algae
10g planted, 11 watts F, gravel, 2 shrimp, unknown algae - diatom?
46g planted, 196 watts CF, Hagen CO2, gravel & laterite,
4 comet goldfish and 1 large SAE, black beard algae.