@Dick In A Box: I carry around several pens for that. Pens can be used to stab people just as easily as knives, and you don't generally feel bad about having something confiscated that you just stole from the office supply closet anyway.
Plus, they're TSA legal and don't typically set off metal detectors.
@BPA-Free_GitEmSteveDave: Those are sum rings, indeed... definitely a nice product. No doubt an exclusive set worthy of factoring into my calculations.
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"What, officer? These are just my bling!"
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Plus, they're TSA legal and don't typically set off metal detectors.
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Cold blooodeeed
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