Does anyone have any websites they could recommend that give ideas on niche marketing. Our product -GPS- is rampant all over the internet and I'd like to offer some unique products as well as the traditional. #1 Question Does anyone has any ideas or suggestions on websites that showcase honest and reliable drop shippers- currently I use WorldWide, but I'm looking to hook up with more vendors than WorldWide has to offer in order to find unique products- doesn't have to be drop shippers as I can carry an inventory. #2 Does anyone have an ideas on a niche for GPS? Answers to either question would be greatly appreciated.

Thanks