Pothos (Epipremnum aureum) can be use both in the land -and water section. Just make sure that it's not entirely submerged. Lucky bamboo (Dracaena sanderianai) can also be used in both sections. As always when using live plants, be sure to clean them thoroughly and remove as much soil as possible, since they often contain potentiality dangerous fertilizers.
Both are very common plants and you can probably find them in your local plant-store or supermarket.