Cold Steel
FGX Nightshade Series
These are hard black plastic that's reinforced with fiberglass. They have a needle point, and, for plastic, they are surprisingly sharp. (I slid the long dagger across my finger, just with its own weight, and it cut me, about halfway down.) It was sore for a while, so, I wouldn't advise doing it.
I've had these for a lot of years and all they do is sit in my box. I've worn the one with the cardboard and duct tape sheath, in the winter, when I have a sock that won't stay up. Lol They're stronger than I thought they would be, especially the Chaos Stiletto, with the three-sided blade. They're also very light, and pretty much indestructible. They are totally weather resistant, and, will never dry-rot. Specs are in the pictures.