Make way for ducklings

I'm not sure how or why, but I have a momma mallard, several ducklings, and several as-of-yet unhatched eggs in one of my flower beds. Cross your fingers that they stay off the radar of the neighborhood hawks, feral cats and traffic!

Any tips on how to keep them happy until they move on, and what to do when they're old enough to swim? The nearest body of water to us is a small koi pond about ten houses down the road...

Obscene kids' toy?

I received a package of "grow capsules" (those little gel caps that dissolve to release sponge shapes) for my birthday from some young friends. The directions instructed me to "please the capsules in hot water."