Here's something I've been doing until I get my lame butt off the bench and make some real sheaths. I take some cardboard and cut it to size, then wrap it with duct tape. I stick a little piece of leather down in the bottom so the point doesn't come through, but plastic would work too. It works great for just sticking in your pocket or waistband. I never wear belts anyway, so if I did have a leather sheath, it would still get stuck in my pocket or waistband.