Just as you mastered the art of packing the perfect diaper bag, he’s potty trained and headed to preschool. Help him make sure he’s got this one in the bag.Step One: Find the perfect carryall. It should be big enough to hold essentials (a snack, a sippy), but not so large that it weighs him down. Our pick: the handmade cotton and linen messenger bags from Mee a Bee ($25-$40), sized to sling across the chests of scholars ages 3 to 6.Step Two: Leave a paper trail. Ecojot’s latest collection of spiral-bound sketch pads and journals ($4.50-$17) supports the Jane Goodall Institute with collage-inspired cover images of endangered species. But it’s the recycled, unlined paper and heavy-duty back cover that give kids what they need to write and draw.Step Three: Color it in. P’kolino’s art set ($20) is a cornucopia of jumbo markers, triangle and wrapper-free crayons, and hexagonal colored pencils — all designed to fit little hands. So practicing good form is as easy as one, two, three.Looking for the perfect lunch box? Check out our photo gallery.MUNCHThe Beehive’s Kids MenuWhat: Say ciao to chicken fingers. The new by-request spread encourages adventurous eating with choices like ceviche, hummus, and fries spiced with sage and sea salt. Why: Owner Jack Bardy’s got three sons under 5, so he’s practically a food magician. When: Daily, 5 p.m.-1 a.m.Where: 541 Tremont St. (617-423-0069).HEARGrandma’s GlovesWhat: Author Cecil Castellucci will read and sign the whimsical new book, along with illustrator Julia Denos. Why: Crafts, lemonade, and flower-shaped cookies make the day extra sweet. When: Sat., noon. Where: Curious George Books & Toys, 1 JFK St., Cambridge (617-498-0062). Participation is free.HELPCradles to CrayonsWhat: Throughout the month, clothing swap site ThredUp will donate $1 per transaction to the Boston-based charity. Why: Make sure everyone goes back to school in style. When: Thru Aug. 31. Where: Online at thredup.com.Photos: Courtesy of Jacqui Miyabayashi / Meeabee; Courtesy of Ecojot; Courtesy of P’kolinoUp to 75% off MLHLynne Hiriak (of Cardigan fame) ups the knitwear ante with ’70s- and ’80s-inspired dresses and sweater tops with color blocks, sequins, and vintage-meets-modern shapes. Take up to 75% off on Swirl.