Meet the Pebblebee Stone: a smart device that you can use to tag your items to find them later. It also has a temperature sensor and a motion sensor. You will be able to use it to find your phone, track things, control smart devices, and more. The device is IFTTT friendly. In fact, you can use the smartphone app to set up shortcuts. For instance, you can use the button to take selfies at the push of a button.
Stone has manual, automatic, and smart modes. It is water resistant and has a replaceable battery. It is compatible with iOS/Android devices. You can find out more on Indiegogo.