Bucephalandra and Anubias are two of my preferred plants. They come in a wide range of kinds, are typically minimal maintenance, flower, are epiphytic plants (which are my fave since they leave the hardscape looking fantastic! ), and are generally nice plants. Bucephalandra Kedagang, Anubias Mini Coin, and Bucephalandra Mini Coin are three of my all-time faves. Duckweed is my least favourite since it grows WAY too quickly. And most often, it's a hitchhiker. However, if controlled, I actually really enjoy it.