So I found this site a while ago, and figured that this project would be perfect for the light weight section. I have to admit, even when I am trying to pack light, I will splurge for a knife a little more heavy duty than this. Survival Knife
Another project on his site that is a favorite of mine, I have not yet gotten around to making one. Khukri Overhaul
He has a lot of cool knife projects on his site.