I try to encourage letter identification in play to help keep her stimulated while she's learning (think developmental play/learning - yay!) We've put foam letters in the tub, played with magnet letters, and have a few fun alphabet puzzles but I wanted to try something new.
G LOVES play dough, so I decided to give her some alphabet rubber stamps to "stamp play dough" with letters. She LOVED it. I sat with her and as she chose letters and stamped, I'd name the letters and encourage her to name them too. I stamped her name for her and then stamped my name. This was such a fun way to do "letter play" and help her learn. :o)