A smartphone is a major EDC for me and you can trade in your old iPhone at Radio Shack and Best Buy. I traded a couple of 8GB 3Gs at Radio Shack and they gave me $100 each for them towards a couple of $200 16GB 4Gs, total cost of $100 per phone. Vastly improved smartphone.
"Both oligarch and tyrant mistrust the people, and therefore deprive them of arms." - Aristotle,