Good things come in small packages (hello, little baby), but baby’s essentials (sunscreen, shampoo, body wash) seem to be supersize only.

Which means when it comes to air travel, the TSA has the right to confiscate your ecofriendly baby body wash for sensitive skin I special-ordered online for this trip and can’t get anywhere else; please don’t take it, sir.

Unless, that is, you shop at 3floz.com, the website that specializes in beauty products available in TSA-approved sizes. The go-to for in-the-know travelers has just added kids’ goods to the mix. Fill your Ziploc with popular selections from lines like Md Moms, Little Twig, and Lather. Everything from gentle body wash to a mineral-based sunscreen is available in a size that meets airport security standards — and yours.

Available online at 3floz.com.

STACK
Lego Architecture: Towering Ambition
What: See artist Adam Reed Tucker’s replicas of the Empire State Building and other landmarks at the new exhibit.
Why: If you’re lucky, you’ll catch a glimpse of him working on his latest masterpiece, the White House.
When: Mon.-Sat., 10 a.m.-5 p.m.; Sun., 11 a.m.-5 p.m.
Where: National Building Museum, 401 F St. NW, b/t 4th & 5th Sts. (202-272-2448). Adults and children, $5; under 4, free.

SOAR
Mary Poppins
What: Everyone’s favorite nanny swoops through the air in the classic musical.
Why: He’ll think it’s supercalifragilisticexpialidocious.
When: Thru Aug. 22.
Where: The Kennedy Center, 2700 F St. NW, at New Hampshire Ave. (202-467-4600). Tickets online at kennedy-center.org. Adults and children, $25-$135.

WOW
Star Wars: in Concert
What: A multimedia extravaganza with a live choir and symphony, plus film footage on massive screens.
Why: The exhibit of costumes, artifacts, and props will dazzle your little Skywalker.
When: Sat., 2 & 7 p.m.
Where: Verizon Center, 601 F St. NW, at 7th St. (202-628-3200). Tickets at 202-397-7328 or online at ticketmaster.com. Adults and children, $35-$75.

Photo: Courtesy of 3floz.com