There are very specific rules to making these weapons. I suck at making them so I'm not the best canidate to ask those rules on. Strangley fun weapons to use are Rocks. Yes, you can make foam rocks to use. You throw them and they only work if you get a head shot, which instantly kills them. However only projectile weapons can hit a head, otherwise it doesn't count. Whats cool is my friend made a Key Blade for it, counted as a Great Axe.