This is such a simple activity that little ones can learn so much from it! I gave N a huge bag of magnetic letters and propped a cookie sheet up against the couch. She would pull one out and stick it on the cookie sheet. Sometimes I'd say the letter or color as she did it or sometimes I'd point out that there were two of the same letter. She loved it! It was also fun to see her figure out that only one side of the letter was magnetic.
Need more of a challenge? Make a quick letter puzzle!