This Wi-Fi detecting bumper sticker will let you and other drivers know instantly when Wi-Fi is available. That way you can quickly set up your laptop on your steering wheel and tell everyone on Twitter about it.

Want to create one yourself and distract drivers behind you? Instructables shows you how. And it’s pretty simple. Basically you will be buying one of those Wi-Fi T-shirts, and then cutting out the electroluminescent panel to stick onto the back of your car. Simple. Pretty nifty.

They won’t get you very far very fast as you walk, stop and dig for treasure, but at least you’ll keep busy. If you are already walking around with a metal detector and a large set of headphones, this should improve your look at least.

These metal detecting sandals will help to keep others away from your treasure too, because they are much more subtle than the typical detector. The right sandal connects to a removable battery pack that’s strapped to your calf and a coil in the sandals does all the work.