A great way to enhance learning is to make a puppet to go along with what you are talking about. Children love crafts and they love puppets. Are you talking about the letter F? Why not make a Fox? Maybe you are learning about bears this week and want to make a bear puppet. And the great news for you is that the internet is full of instructions on how to make these.
Enchanted Learning has some great instructions for some paper bag puppets: http://www.enchantedlearning.com/crafts/puppets/paperbag/
DLTK is another classic resource with some great puppets: http://www.dltk-kids.com/type/paper_bag.htm
ABC Teach has printables for you: http://www.abcteach.com/directory/fun_activities/crafts/paper_bag_puppets/
More fun ideas at First School: http://www.first-school.ws/theme/crafts/paper_bag_puppets.htm
If you don't find what you are looking for on these pages, go to Google and search "paper bag puppet ____ "(insert key word here, like Dog). You will get tons of ideas.