Are you looking for a way to reuse some of those caps off of your baby food jars? Then here is a great idea. After you clean them simply use a permanent marker and write letters on each cap. I did a set of capital, lower case, and numbers. After you have completed that there are an endless amount of activities you can use them for.
Our first activity was very simple. I grabbed our letter flash cards and my daughter had to match the letters, say the letter, say the sound, and trace each letter.
A few other ideas:
-match lower case with upper case
-put the alphabet in order
-find objects that start with that letter
-I bet you can come up with other ideas too...Please make sure you come back and share your ideas. :)