fun question--i would say a Swiss Army Tinker if he's the type who like tools or a good fixed blade Mora with a hand guard if he's the outdoor type.or--just get a smaller Damascus blade and have a father and son winter project making one..sheath also.
opps--edit..i just looked at the question again..pocket knife--SAK in that case

Edited by CANOEDOGS (11/10/08 03:47 PM)