Star wars weapons: Lightsaber, blaster, Ewok slingshot, Wookie crossbow
Indiana Jones weapons: whip
Lego Batman weapons: Batarang, Joker's gas-bomb thing, other villain weapon
Lego Knights Weapons: Axe, Lance, Scythe, Spiky-Ball-On-Chain (Forgot what it's called), Shield
Lego Pirates Weapons: Musket, telescope (can be used and then thrown)
Lego Power Miners Weapons: Drill, Dynamite, Jackhammer, Pickaxe
Lego City Weapons: Bat, Heedicalking's gun, handcuffs (prevents player from using items for a couple of seconds when hit/put on)
Bold is what's already been done. Although we should make new ones that are better (maybe.)