Last week little Timmy scolded you for buying bottled water. For shame, Mom.Turn your contraband into something creative with local illustrator Brian Yanish’s Scrap Kins Build-It Book. The comic-style tome is full of crafty projects that recycle unavoidable household castoffs (toilet paper rolls, egg cartons, cereal boxes) into art, so nothing goes to waste. Here’s one we tried.Stacker’s Bottle Garden MaterialsPlastic water bottleCereal box or tissue boxToilet paper tubeDrinking strawFlower or plant seeds1 c. potting soilScissorsGluePencilCrayons or markers1. Cut the top half off the water bottle using scissors. (Be sure to help kids with this step.)2. Fill the bottom half of the bottle with potting soil, leaving some room at the top. Poke a hole in the soil with your finger, place two or three seeds in the hole, and cover.3. Open your cardboard box at the seams, flatten it, and flip to the unprinted side.4. Draw a tree-top shape on the cardboard and cut it out with scissors. Color in the tree top and label it with your child’s name. Make tiny snips in the top of the toilet paper tube and slide the tree top into the slits.5. Draw a flower shape on the cardboard and cut it out with scissors. Color the flower. Make a tiny snip in the top of the straw and slip the flower into the slit. Secure with tape if needed.6. Set up the garden on a window sill, using the top half of the bottle as a vase.7. Water the seeds once a week and watch them grow.Find more creative ideas in Scrap Kins Build-It Book, available online at amazon.com, $10. Find more information at thescrapkins.com. Ready to get dirty? We found gardening gear you’ll really dig. DISCOVERThe World’s Largest DinosaursWhat: An in-depth look at sauropods, some of the larger animals to ever walk the Earth.Why: Life-size bones are a big attraction.When: Daily, timed admission every hour 10:30 a.m.-4:30 p.m.Where: American Museum of Natural History, Central Park W., at 79th St. (212-769-5100). Adults, $24; children, $14 (includes museum admission).PLAYSpring Fling at Brooklyn Bridge ParkWhat: Instead of the traditional egg hunt, opt for a free egg roll and appearance by the Easter Bunny.Why: Hula hooping, races, and games in the fresh air wear them out.When: Sat., 10:30 a.m.-1 p.m.Where: Pier 1, 2 Old Fulton St., at Furman St., Dumbo.HAPPILY EVER AFTERThe Complete Works of the Brothers Grimm (Abridged)What: Hundreds of fairy tales (including “Sleeping Beauty,” “Snow White,” and “Cinderella”) in a single one-hour show.Why: An unprecedented theatrical feat equals fun for all ages.When: Sat. & Sun., noon & 2 p.m.Where: Manhattan Children’s Theatre, 52 White St., b/t Broadway & Church St. Tickets at 212-352-3101 or online at ovationtix.com. Adults and children, $20-$50.