Shopping Bag provides the latest news about retail business openings, significant changes to existing retail businesses, shopping trends or details about unique product offerings. Submissions should be sent to dailyjournal@scbiznews.com.

For the seventh consecutive year, Minor League Baseball has ranked the Charleston RiverDogs among the top 25 in merchandise sales for 2011. Items featuring mascot Charlie T. RiverDog are some of the most popular in the souvenir shop. Native Charlestonian Michael DeAntonio has coordinated the shop for the past five seasons. The RiverDogs are joined by the Lakewood BlueClaws as the only South Atlantic League members to make the list.

Southeastern convenience store chain The Pantry Inc. is launching its second annual Roo Cup deal, a refillable cup for fountain and frozen beverages. The Roo Cup is now available at Kangaroo Express convenience stores while supplies last. The 2012 Roo Cup retails for $6.99, plus tax, and can be refilled with any fountain or frozen beverage for only 25 cents through Labor Day at any of the 1,600 Kangaroo Express locations throughout the Southeast. Last summer, the 264,000 Roo Cups sold out in just four weeks, so twice as many cups are available this year. Each newly designed cup has a QR code that customers can scan every Monday to access deals and giveaways.

Wonder Works is hosting the second annual Wonderfest from 10 a.m. to 3 p.m. Saturday at its location at 975 Savannah Highway, Charleston. There will be performances by Karoline Rhett, The 3 Dudes and Daniel Island Hip Hop, plus a jump castle, pony rides, a dunking booth and free hot dogs, ice cream and snow cones. The event benefits four nonprofits developed by kids for kids: Hugs for Harper, Happy Wheels, Abby’s Friends and Keys for Hope.