I ended up settling on a Harness to house the Spidey Sense device. I was inspired by leather working, rather than feathers, because feathers looked strange out of context! I drew a sketch of what a special ops character might look like, and decided the Harness was best suited for tactical purposes.
Materials List for the harness and electronics is below along with code!
The only issues I ran into involved the Ultrasonic sensor, its very sensitive and measurements are a little sporadic. More debugging is needed to make it super accurate. Also, its static sensitive so I may have just blown the sensor!
For the Dome shape, I used a modified template from Evil Ted Smith! Below is the schematic for the electronics.