‘Tis the season for generosity, but who says you can’t get something in return? From Tuesday November 24 through Thursday December 17, bring a nonperishable food donation to a participating BumbleBee Tennis location—one’s at the U.N. Plaza’s Millennium Hotel, the other is in Soho—and your child (age 3 to 9) can score a free introductory lesson.  Sign up in advance on the company’s website. It’s a great way to spread the, er, love. You should also check out our roundup of tennis classes around the city.

Head to chic boutique Estella this Thursday, November 19, where SHirin Kids, best known for its line of artsy hand-screened tees, will show off its foray into dresses. Act now: The frocks are limited-edition. Fans of the eco-friendly line can also peruse the “Winter Wonderland” collection, which includes SHirin’s signature tops and onesies. Bonus: If you’re one of the first 50 shoppers, you’ll snag a free SHirin tote bag.

For more savings, return to Estella next month: From December 3 through the 24, the store will have its annual holiday sale, during which you can stock up on cute kiddie clothes for up to 50% off.

This afternoon, the Radio City Rockettes will hop off stage and onto the streets, where they’ll hide out in a secret spot somewhere around town. (How in the world do you hide all those gams?) Fans are then invited on a scavenger hunt to uncover where the lovely ladies are secluded. Starting at 3:30pm, clues to their whereabouts will be revealed every ten minutes via the Rockettes’ Twitter account. Stay close to your TwitterBerry app as your wander around Gotham with your brood. Prizes—a bundle of tickets, perhaps?—will be awarded to the top three hunters.

Paul Frank and his signature monkey Julius has always been one of our favorite stuffed characters. (We probably wouldn’t have Ugly Dolls or Happy Tree Friends if it weren’t for this eccentric little ape.) So we’re really excited to be giving away a set of four adorable Paul Frank plush dolls perfect for your little monkey at home. Click here to enter, then visit the Paul Frank boutique at 195 Mulberry St. to peruse all of the different styles.

The Staten Island Zoo is offering a wild winter deal: Starting in November and continuing through the end of February, kids under age 14 get in free with a paying adult. If you decide to take advantage of the promotion on a cold or rainy day, check out one of the indoor exhibits, including the 13,500 square foot Reptile Wing, which houses more than 200 critters. If your youngster isn’t into North American rattlesnakes, Pythons or Anacondas, head to the African Savannah area (also indoors) to view rare Amur Leopards. Visit statenislandzoo.org for more info.

Think we’re overstating it? Well, just check out this incredible NYC holiday prize package. Even Santa wants to get his hands on this one. It includes:

- Tickets to a host of hit shows, including the Radio City Hall Christmas Spectacular, Wintuk, The Nutcracker and others

- Free entry to the Bronx Zoo, the Holiday Train Show at New York Botanical Garden and the Top of the Rock and more

- Goodies such as a Nintendo DSi system, The Nightmare Before Christmas on DVD, $100 Wendy Mink gift certificate and more

To peruse a complete list of prizes and to enter, just click here. Yup, it’s that simple. Happy holidays (way in advance).

By now you’ve heard that children’s TV pioneer Sesame Street turns 40 this month. Although the show is filmed at Kaufman-Astoria Studios in Queens, the folks at the Brooklyn Public Library are hosting a major exhibit showcasing Jim Henson’s beloved Muppets. Head to the Central Library at Grand Army Plaza this Saturday, November 14th for the kickoff party, where kids can partake in Sesame-inspired crafts, watch a screening of The Adventures of Elmo in Grouchland and meet the little red guy himself.  Speaking of Elmo, he appears on a new, limited-edition BPL library card available at any borough branch. Get one while supplies last, or you’re sure to have a little grouch on your hands.