You don't need big money to create weapons. Not very effective, but . . . if you hit the right target, very cost effective.
Cheaper than bombers and aircraft carriers. Couldn't do much aiming, though - just send it east was the plan.
You laugh - except 6 people died when hit with one of these things. Of course, auto accidents probably killed more people that same day.
More here. And here.
Makes you wonder, though, what if these things had carried some biological agent?