My mom came across this Alphabet Game from 1972 and it is so great! It has a precious game board and spinner, but what I love about it is the game cards.
The goal is to spell words on the game cards using big plastic letters, but I love it now for S because he can just match the letters on the cards and there is a picture of the word on the card as well. It reminds me of this homemade activity, but cuter. My only complaint is that I am not a fan of using all capital letters.