Playing with a Full Deck

A few years ago, we had a parent donate about thirty decks of playing cards.  Numbers and letters--- it was an offer I just couldn't refuse.  Now comes the tricky part...what to do with all those cards.  This activity is set out for the MWF classes during center time.  We recycle cardboard (because reusing is recycling) from snack boxes, gift boxes, etc. and write four numbers on the cardboard. The student glues the matching number onto the cardboard.  How easy is that and a great way to encourage number recognition  plus it is inexpensive.  We try to encourage participation in this activity by making it an 'easy button' activity.