Pouring water
If you’re not into the usual water fountain installation then you can create something more bespoke and funny as a talking point for your guests. You could choose a novelty fountain with some sort of funny gnome.
Alternatively, you could make this quirky fountain out of recycled watering cans and a washing tub, a drill, a pump, and some plastic tubing. Drill holes in the cans to run the tubes through, attaching either end to the pump, and hang at intervals from your fence.