Ok, don't think I've ever been asked something like that before. You're staying in Sanderling ... Ok, I would try one of two places in Kitty Hawk. The good news is that they are both in the same complex (or at least right next door to each other). There is a Walmart on Rt 158 just as you come over the bridge. The address and phone number is:
Walmart
5400 N Croatan Hwy # M
Kitty Hawk, NC 27949-3921
(252) 261-6011
In the same general shopping center, there is also a Radio Shack. Its address is as follows:
Radio Shack
Ste D, 5400 N Croatan Hwy
Kitty Hawk, NC
(252) 261-6334
I'd try either one of them. I think they woudl be closest to where you are staying.