Print out the present cards. Then mix them up and spread them out. Have your child match the magnet letters to the presents. For added fun you can use a large metal baking pan. The kids love when the magnet letters stick to the pan. Depending on where your child is on their alphabet knowledge, you could match uppercase to uppercase or uppercase to lowercase.
Another fun way to use these materials is in a sensory bin. You could fill it with rice and pretend it is snow. Make sure you laminate the cards or at least back them with construction paper if you are going to use them in a sensory bin.