When you want to add an attractive water element to your desk, the Biorb Flow Aquarium ($130) is the right place to start. It includes everything you need for a working aquarium, just supply some living things — they suggest small fish or shrimp — and water. Its small profile (only 15 inches by 10 inches) won't dominate all the space in your cubicle, making it perfectly-suited for work. Acrylic construction is ten times stronger than glass, so you don't have to worry too much about your overzealous cleaning crew. It also only uses 12 volts of power, so you won't break the bank keeping the filter running.