brought home that coveted basquiat but want to be sure it doesn’t go crashing to the floor thanks to your all-thumbs home-project tomfoolery? walabot Diy ($199; walabot.com/ diy), a new androidenabled pipe, stud and electrical-wire detector, is here to help. your smartphone screen is the digital canvas on which it’ll generate 3-d renderings of your wall interiors. plug the slim device into your phone to harness its radio-frequency imaging sensor, which can “see” through cement and drywall and measure depth up to 4 inches. (an iphone version is on the way.) the Walabot is so sensitive it can detect plastic pipes, leaks, termites and even the movement of rodents. Which is handy, as sotheby’s return policy probably doesn’t cover mouse bites.