I made something like this, except its useful.
Basically, I used one of Space Guy's old script, and edited it. Theres a sword, gun and bow, which when used, don't do anything. However if you add certain events to the brick, you can make the weapons fire projectiles when they are used. Also with this, you can make sounds play, or just have completely random things happen. Its kinda fun. To go with this, I made "Fake" projectiles, which are projectiles that do no damage, simply for looks. Combined together, you can make some crazy stuffs. Eg a gun that when hit by, can deal a certain amount of damage, based on a variable from the player, and the fire-er. (Strength and armor variables?)
Very useful. Not releasing unless Space Guy says I can, and even then, probably not.