Do you have left over Valentine's Day cards like we do? Have your little mailman "deliver" them and have fun matching numbers too.
I wrote numbers (1-10) on leftover Valentine's Day cards we had and also on envelopes. I taped the envelopes around the house and had my little mailman "deliver" the cards to the matching number envelope.
At first, I just handed her one card at a time. She'd identify the number and we'd hunt for the matching envelope together. Next time, I'm going to tape the envelopes in order in a line instead of spreading them out all over the house.
After doing it a few times together, she wanted to be in charge of all of the cards at once. It was so much fun watching her pretend to be a mailman!