It may seem to make little sense that “people are clamoring” to purchase a luxury safe for jewels and watches that’s designed to be toted about with a thin carrying strap. But because “there are very few ways of securely traveling with small valuables,” the customizable Guardian travel safe from Döttling of Germany “actually makes a bit of sense to buy.” Its handcrafted leather or crocodile skin wraps a cylinder of carbon fiber and polycarbonate that’s lightweight and extremely resistant to tampering. That flimsy strap needn’t be a worry: Each case also comes with a GPS tracker.