Dad worked life support in the Navy when I was growing up. I got a Navy survival knife in time for my 8th b-day and Brownie Day Camp. We had to earn a "Totin' Chit" - just like the Cub Scouts did(way back in the 60's!) Still have mine; knife not the Chit. Too bad most kids these days aren't allowed to experience the responsibility of carrying a pocket knife. Heck, that goes for too many adults these days, too!
Gave DD14 a SAK when she was almost 9, but she actually gets more practice with knives helping me in the kitchen.
This link shows a pic of ye olde Navy survival folder
http://www.uswings.com/images/usmc_pocketknife.jpgedited to add: some lucky kids to get those gorgeous knives!