Our hands-down favorite? Bring on the etiquette! Try the old napkin-in-the-lap trick, only plink ice cubes on top. (A trick we picked up in Mallorca. Oh, if only.)

Throw everything in the freezer. Pillowcases, bath towels, flip-flops, Dr. Scholl’s insoles, stockings, undies, a hot-water bottle, body lotion. (We haven’t tested the iced undies yet, but it sounds promising).

Bring back ladylike heat-busters: Japanese paper fans work wonders on the subway platform (so coquettish!). Or break out a pretty parasol. (Do we see a trend emerging?) Available at Pearl River Mart, 277 Canal Street (212-431-4770).

Spend lots of time cruising the aisles of the frozen-food section at the A&P.

Regress. Kiddie pools! Squirt guns! Add some kitsch with a Garden Troll sprinkler, a gadget that sprays water from his neck as far as 72 feet. Start downing some mojitos, and you’ve got yourself a party, kids! Our favorite baby pool is at Room Interior Products (so slick we get chills just looking at it!), 435 Hudson Street, at Leroy Street (646-638-3333). Even cooler? The Aqua Troll Sprinkler is on sale (29 bucks!) online at Restoration Hardware, or 935 Broadway, at 22nd Street (212-260-9479).

Chill baby wipes. Use them.

Toss cucumber or lemon slices, along with ice cubes, in the tub. Soak your feet (or your whole body, for that matter). Significant others are optional.

Be social. Hydrate! Do water shots with colleagues at the office. Heck, play quarters by the water cooler.

Breathe. This too shall pass.