The big news for many NYC families this week is, of course, the first day of school for more than 1 million public school students. But as you ease back into your old routine, we've got some fun news for you, like FREE rides at Coney Island's Luna Park, eye-popping art in unexpected places (you'll need to look up) and nature volunteering opportunities for teens. Plus, we've got the scoop on a handful of notable openings and closing on the NYC family scene, and a few other tidbits.

It may be the lazy days of summer but we're going full throttle here at Mommy Poppins with (almost all) good news. In fact, we have lots of things to sing about, in particular a brand-new series of kiddie music classes created by children's music legend and NYC mom Laurie Berkner. Plus info on signing up for this year's edition of Morningside Lights, how to snag two-for-one Broadway theater tickets come September, the latest on the battle to keep public school student data private, the sad closure of an Old New York soda fountain and other tidbits of interest to NYC families.

It wasn't until I recently overheard a group of moms passionately discussing party balloon decorations that I realized what a hot topic it is. A really fabulous themed balloon installation can make a young kids' birthday party seem extra special, and at the end you can give them away as fun favors. Even teens and grown-ups aren't immune to the charms of over-the-top balloon art. Bonus: Unlike flowers, balloon centerpieces won't trigger seasonal allergies (though a sudden pop might scare a tot or two).

While pretty much any old party store carries balloons, if you're looking for something unique or customized (and are willing to pay the price... beautiful balloons don't come cheap), you're going to want to go to the experts. We found eight stores and services in NYC that specialize in balloons for all occasions, from kids' birthday parties to sweet sixteens to bar mitzvahs to weddings.