I opened my magical cabinet o' garbage, pulled out a funnel and some containers. I filled a few containers with water and let the pouring commence. I don't know if other toddlers are like this, but if so, by all means, take advantage! If your child loves pouring water, you have got a free, relatively mess free (a little water on the floor does not count as a mess in my book) source of entertainment that you can use over and over.
I periodically refilled the containers as more and more of it ended up on the floor. Once I asked him "where did all your water go?" He responded: "It's in the towel."
And, bonus! I searched the web for water pouring ideas one day and found that it is considered all kinds of educational!
If he becomes a genius, I'm going to take credit. "It was all that water pouring you did!"