When you have two kids close in age, but not twins, it becomes nearly impossible to take them to their respective baby, toddler or preschool music, gym or art classes for mommy and me time. You have to leave one with a nanny or with dad and take the other for special time. If you are a stay at home NYC mom this becomes daunting and exhausting. Three Little Birds Music at 266 East 78th Street has a great sibling class for multi-age little kids that solves for this problem. Currently held Tuesdays at 1:30 and Wednesdays at 4:30pm you could unwind with your double stroller in-tow for a delightful class filled with fun music and song that both baby and toddler or preschooler will enjoy together and best of all, with their mommy. Gymboree also has Family Play and Learn times where siblings along with mom and dad could come, use the playroom and join in for some structured songs, activity and play at both Upper East Side, Midtown, Upper West Side and Downtown locations. Check out their schedule of classes for times at the gym near you.