Here's what we used:
Since we have worked with vowels and consonants already this activity was meant to reinforce what she has learned up to this point. I asked her to put the pink hearts in the vowel cups and the red hearts in the consonant cups. As she did this I also asked her to tell me the sounds of both the vowels and the consonants.
This activity can be switched up and geared towards whatever your child might be working on right now. It could be number recognition, uppercase and lowercase letters even color sorting. Another variation is if you don't have cupcake liners just tape some pieces of paper to the bottoms of the muffin tin. Most importantly is to make the learning fun!