I took some plastic, magnetic letters and threw them in her kiddie pool.
Then I found a (semi) straight stick, tied string to it, and tied a little magnet to the end of the string.
Then the fun began!
Time to "fish" for letters!
First, I called out letters and had her catch them.
Then she would fish, and tell me what letter she caught.
Fun & educational. :) Can't beat that.