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Nice idea, but do you really think you can get a working bit out of plastic? Even the cheaper metal bits usually break or wear out way to fast...
Same goes for the bottle opener. I think it will break before you have your beer open. (There is a good reason the other printed bottle opener "abuses" a coin to lift the cap.)

And if you want to take that tool in your pocket, it would be nice if you had some kind of slots to store the bits in, so they don't make holes in your pocket or even your leg.