A Pond for Kids
I raised 4 kids and one of the constants was that they all loved messing about with water. Not necessarily swimming but messing about with sprinklers and water jetting here and there. This water feature is a kid's pond - complete with copper ornament that sprinkles water up onto the edge of the pond where a kid can play under the cooling jets on a hot day.
This is fairly simple and any handy person could drill out some holes (small ones to start) and bend a copper pipe (or put elbows etc into straight ones if bending pipe is beyond the technology you possess). I don't see any reason why black plastic pipe wouldn't do the same thing (other than the look of the thing - copper is much more elegant but we're talking a kid's pool here - elegant may be a word we can ignore). Hook it up to a pump and you've got a sprinkler. Just make sure you've got enough water in the pond or an automatic refill system.
Note the slotted rock that streams the water back down into the pond.
And how old do you have to be to no longer be considered a kid?