Absolutely. I wouldn't think of a long term bug in without things like my PocketRef and Pocket Handyman, Where there is no Doctor, and all the others. Even for kits made with mobility in mind, I think you're right, we should have another catagory. Most of us have something in there, but we just consider it Miscellanious.
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-IronRaven
When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.