Due to it's simplicity and natural elegance, this is my favorite type of paludarium. Rocks can be stacked or glued to rise out of the water. If a circulating pump is used, a waterfall is easily created. Plants may be placed on the rocks so that thier roots grow into the water for a lovely effect; many plants grow well in this manner, including Anubias, Pathos vine, dwarf palms, dwarf bamboo, ficus species including weeping fig and climbing fig, and many others. Also epiphytic plants may be used, but remember to mist them periodically.
Wood works very well also because it is such a natural medium. In nature, there are many biotopes that can be simulated using the emergent wood technique. Many riverbanks are overrun with vegetation, including trees and tree roots. Take a cypress swamp, mangrove flat, flooded forest or jungle pool bank for some good examples from which to find ideas. Simply position the wood in such a manner that it emerges from the water. The plants mentioned above will grow well on this wood above water if their roots reach the water. Java moss is also excellent as long as it is kept moist. For best effect, position the wood so that it appears to be the roots from a tree growing into the river bank, or the trunk of a tree flooded during the rainy season, such as in the Amazon basin. This will add substantial interest to your aquarium.