For my daughter's class, we are doing a "snowball" relay race. You have the kids from two lines. One from each line goes at a time- they have a straw and a bowl of cotton balls at the beginning and have to hold to cotton ball at the end of the straw by sucking through it. They have to race to the other end and drop the cotton ball in another bowl, then they run back to tag the next runner. Let me know if that's a bad explanation!