Best-yet cases for iPads and iPhones, auto-tattoos, Slinkachu's new work and more in our weekly web round-up

LifeProof’s iPhone 4 Tcase is perfect for the techie adventurer. Designed to be super shock-, water- and dirt-resistant, the case can withstand falls from nearly seven feet and can survive the same depth underwater. While you can’t talk while swimming, an attachment connects headphones through a water seal so you can sing along to Adele in the tub without worrying about trying to save your device with rice.