Total cost= $16
Since it's my cat who loves the running water, and she spends much of her time on or near my computer desk, I decided to make a table fountain that she and I could both enjoy.
Step 1: Parts
Make sure whatever pump you get has a way to modify the water outflow. This pump lets you take off the "Aqua-Sweep" outlet and add tubing. That's crucial to my design.
Then I got a glass bowl from Goodwill, some rocks, and some air line tubing (not the small kind!)
Step 2: Assembly
To make sure the tubing stayed in the bent shape, I heated it carefully and bent it by hand. I was careful not to do it too much because I didn't want a radical bend, but it seemed to work. I tried a burner on the stove, but found that a lighter a few inches away for short periods worked better.
Then it was just a matter of placing the rocks so the flow of water looked nice and didn't make too much noise.