Like most people, we like to get cheap umbrellas so that we don’t feel too bad the next time we forget them somewhere. And that happens often enough, so it’s not necessarily being overly cautious. But if we wanted to get an umbrella that isn’t made from cheap materials, and doesn’t turn inside out the second the wind picks up, we’d have to consider the Davek Alert Umbrella. There’s a Bluetooth chip in its base, powered by a watch battery with a life of 1-2 years, which will connect to your phone automatically. Then, once it senses you’re more than 30 feet away, you’ll get a notification alerting you that you might be leaving it behind. Sure, there’s the possibility you’ll get notified if you simply walk to the kitchen after leaving the thing in the entrance lobby, but you can just dismiss it and carry on, we suppose. At $80, the Davek Alert Umbrella isn’t cheap, but you should know it’s made by a company that sells even more expensive umbrellas, and has been doing so for years; presumably their stuff isn’t low quality, and your pledge is safe with them.