As mentioned above, you can throw about any thing and make them stick, when I was in the Navy, had to work on base remodeling an office, stripping out the old paneling, had a paint brush with a round pointed handle...went in nicely to that paneling!
Also Screw drivers are quite handy and once you get the feel for throwing, you can become quite accurate. It's good to learn to feel the weight of things, visualize how they will travel through the air, sounds okey, but become the knife is really a true statement, some just rely on basic throwing but I throw and feel the weight/balance and position of the knife in my hand as I throw, got my daughters involved and they love it. They easily out throw their boy friends, who look on a little nervously as the knife sinks into the target!
Word of caution, when throwing at targets that have rounded edges, such as poles/trees, the knife can careen off the curve and come
sailing right back at you! so you better be on your toes! Also throwing at live trees isn't such a good idea.
Good luck, I'll have to check into those 12" nails! on board ship a guy asked me if I could throw anything, I picked up a welding rod and stuck it into some plywood near by...he smiled...
G2