On Saturday, October 24, 2009, you can take this coupon into any Barnes & Noble to get a free small cookie and kid's-sized hot cocoa. No purchase is necessary. There are other coupons on the list as well, including 30% off any Halloween book and 20% off New Moon Soundtrack (you can also get it at Amazon.com for $9.99 here)
Check your local store events here. It looks like many stores have story times going on all the time.
(Thanks, Hip2Save! and Moneysavingmom)