Pond ideas

We did a classic pond in a half barrel in one garden; it sat against the edge of a patio area so we could look into it, and we built up one side with rocks so that wildlife could get in and out. The barrel was cheap and didn't need lining and the rocks were lying about. No running water, but it only took half a day to put in.
I've just been looking at solar pumps because I want an ornamental bit of moving water close to our seating area. Here they seem to start from about 24€ but I found one discounted to 5.99!