Here is a cool wearable – the WiFi-detector shirt that will let you know if a network is nearby. The detachable detector / display combo runs off three AAA batteries for "hours" — and ThinkGeek should have them for $30.

This cool fashion accessory will record all your stupid moves for YouTube, or anyone else. With its 192 degree rotating lens, twin laser alignment, "fine line" compression engine, and shockproof, splashproof aluminum enclosure, it is ready for almost all of your stunts. Planned for a holiday-time release, it is priced at $349.99, and ready for preorders right now.
Vholdr