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If you're in the UK I've noticed Poundland stores selling a sim adaptor kit with a sim extraction tool for a pound (obviously lol!) though it may not be in every shop. Not tried one yet so not sure if it's too thick, I got one from a Carphone Warehouse outlet for a fiver with a sim kit, they're only just thin enough for the sim ejector on my iPhone 4S though.
 
One of the most expensive retail phones out there and Apple can't even throw in a $0.01-0/$0.05 sim ejector tool? They're taking the piss.

Mines came with the tool (UK)
 
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