LOL, I'm sure that your ducks enjoyed it.
If your pond is in a permanent position you could put some plants around it - tough plants that live on the edge of marshes are good as plants to put round a pond. They will enjoy the water that your ducks splash out of the pond. You want things with stringy, strong leaves. Try googling 'bog garden plants' or 'wetland garden plants'. If you don't have dirt around your pond you could try having the plants in pots. The ducks don't need the plants though - I'm just suggesting this in case you'd like to have some plants around to look nice :)
If you'd like to tame your ducks a bit more then giving them treats is the way to go. It's well known that ducks love thawed-out frozen peas, so you could try those. At first, toss the peas on the ground at a distance from you and stand back to let the ducks feel safe to come and investigate. Over time, you can toss the peas closer and closer to yourself. Maybe they may eat out of your hand eventually.