One mom’s freezing (50 degrees and gray in Miami) is another mom’s heaven (a blustery 30 degrees in Boston). But no matter on which side of the jet stream you fall, you’re bitter about winter. So you’ll warm right up to the Haypenny Handmitten, a mom-invented slipcover for your stroller handlebar. Made of a soft alpaca wool blend and lined in cozy fleece, it snaps over the handle. The roomy pocket is perfectly positioned for you to stick your hands in and push the carriage. No more freezing digits, chapped fingers, or dropping gloves in the struggle to answer the phone. Plus, Handmittens are made by female fair trade artisans in Nepal and Peru who receive training, support, and a living wage. So no one’s left out in the cold. Available online at haypennydesign.bigcartel.com, $68-$100. DECK THE HALLS The Christmas Attic What: Stock up on the extensive range of tree trimmings even if you’ve waited ’til the last minute. Why: Pickle ornaments ($5) and nativity finger puppets ($8) offer a silly twist on traditional. When: Mon.-Thurs., 10 a.m.-9 p.m.; Fri., 10 a.m.-4 p.m.; Sun., 11 a.m.-9 p.m. Where: 125 S. Union St., Alexandria (703-548-2829). SPLASH The Water-skiiing Santa What: Wave hello as Saint Nick, the Grinch, and other friends whiz by. Why: The chilly temperature of the Potomac River doesn’t bother them one bit (now that’s what we call jolly). When: Fri., 1 p.m. Where: National Harbor, 150 National Plz., National Harbor (301-203-4170). MAKE BELIEVE Video Calls with Santa What: The new app lets little elves interact with the big guy ($1). Why: The dreaded naughty message puts the kibosh on bratty behavior. When: Before he leaves the North Pole. Where: Online at itunes.apple.com. Photo: Courtesy of Haypenny Design Last-Chance Holiday Delivery Still scrambling for gifts? Deeply discounted goods from Rubber Duck, Chelsea Flower, Susan Hanover, and Kelly Bergin — plus quirky gifts from the holiday shop — will be delivered by December 24 if you order today on Swirl.