· Here’s a fun afternoon of play just waiting to happen: Check with your local grocery store or big box store to see if it has uncrushed cardboard boxes. Get several to create a cardboard city in your living room or child’s bedroom.They can be decorated to look like anything, or cut, trimmed and taped into most any shape.Kids even like to stock them with pillows and blankets for a cozy sleepover. When you’re done, break them down and recycle until the next adventure. -- J.J. in Florida · Sources who know say that if you drop a marble (clean ...