Right now there are some good deals to be had on Doug's CRKT RSK mk5. They've been popping up on various sites around ten bucks. Mora knives are in the same price range and make nice stocking stuffers. I think small inexpensive flashlights are a great gift, too. The Olight I3E EOS is a terrific light for around $11.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman