This weekend, go swimmin’, swimmin’, in the swimmin’ pool. WEAR Alexandra Cassaniti Swimwear What: The designer’s new line of reversible bikinis and one-pieces are made of neoprene — and they’re super cute. Why: Surf’s up, dude. Where: Online at alexandracassaniti.com. USE Hu2 Design Wall Graphics What: The cool stickers include designs inspired by Banksy and Robert Indiana, plus an array of cityscapes, poster frames, and kid-friendly creatures. Why: They beat watching paint dry. Where: Online at hu2.com. SHOP Yard Sale Treasure Map What: Enter your city and the handy new site will show you yard sales in the area. Then it’ll map out a route so you can hit ’em all. Why: It won’t even cost you a nickel. Where: Online at yardsaletreasuremap.com. DRAW 500 Pencils What: Every month (for twenty months) you’ll receive 25 pretty pencils in the mail — all with unique names like Pumpkin Pudding, Lobster Bisque, and Mermaid’s Gown. Why: They’ll pass with flying colors. Where: Online at 500pencils.socialdesigner.com. EAT Valerie Toffee Treats What: The L.A.-based confectioner’s new sweets will melt in your mouth. Just try not to eat the whole bag in one sitting (like we did). Why: You’ll have a ball. Where: Online at valerieconfections.com.