Well, if you want ideas...
I have a text processor like program, currently sed to generate insults, that I could create a set of text files for to create crazy weapon ideas...
Edit: here it is, the first round of zany computer-generated ideas.
Idea: A(n) instakill turret
Idea: A gun that shoots sniper rounds and has alt-fire that makes sandwiches, launches grenades, and launches grenades
Idea: A gun that shoots sniper rounds
Idea: A(n) rapid-fire turret
Idea: A gun that shoots death beams and has alt-fire that allows you to swing from the ceiling and automatically wins the game
Idea: A(n) hidden turret
Idea: A gun that shoots death beams and has alt-fire that automatically wins the game and prints money
Idea: A(n) silent turret
Idea: A(n) AI turret
Idea: A gun that shoots (mace ) and has alt-fire that makes sandwiches, makes sandwiches, makes sandwiches, sucks nearby ammo to you, tosses salad, automatically wins the game, and automatically wins the game
Idea: A gun that shoots lasers and has alt-fire that prints money
Idea: A(n) hidden turret
Idea: A(n) rapid-fire turret
Idea: A gun that shoots (gun that shoots (gun that has an attached AI turret))
Idea: A gun that shoots (gun that has an attached AI turret) and has an attached overpowered turret
Idea: A(n) energy board-with-a-nail-in-it
Idea: A(n) sword with an attached sword with an attached gun that shoots death beams and has alt-fire that can improve TV reception
Idea: A gun that shoots (board-with-a-nail-in-it ) and has alt-fire that tosses salad, sucks nearby ammo to you, automatically wins the game, automatically wins the game, automatically wins the game, automatically wins the game, and can improve TV reception
Idea: A gun with an alt-fire that launches grenades
Idea: A(n) overpowered turret
Idea: A(n) ancient mace
Idea: A(n) rapid-fire turret
Idea: A(n) AI turret
Idea: A gun with an alt-fire that can improve TV reception, cleans dishes, launches grenades, tosses salad, can improve TV reception, makes sandwiches, and launches grenades
Idea: A(n) overpowered turret
Idea: A gun with an alt-fire that automatically wins the game, cleans dishes, and launches grenades
Idea: A(n) silent turret
Idea: A(n) advanced sword with an attached gun that shoots standard bullets and has alt-fire that cleans dishes and prints money
Idea: A(n) board-with-a-nail-in-it with an attached gun that shoots (energy board-with-a-nail-in-it with an attached overpowered turret) and has an attached rapid-fire turret
Idea: A gun that shoots lasers and has an attached rapid-fire turret
Idea: A(n) hidden turret
Idea: A(n) mace
Idea: A(n) rapid-fire turret
Idea: A(n) AI turret
Idea: A gun that shoots (mace )
Idea: A(n) instakill turret
Idea: A gun that shoots standard bullets and has an attached AI turret
Idea: A(n) hidden turret
Idea: A gun with an alt-fire that cleans dishes, sucks nearby ammo to you, makes sandwiches, tosses salad, sucks nearby ammo to you, prints money, and tosses salad
Idea: A(n) mace that once belonged to a powerful warrior
Idea: A(n) mace that once belonged to a powerful warrior
Idea: A gun that has an attached hidden turret
Idea: A gun that shoots lasers and has alt-fire that cleans dishes, launches grenades, tosses salad, cleans dishes, launches grenades, allows you to swing from the ceiling, and automatically wins the game
Idea: A(n) silent turret
Idea: A(n) silent turret
Idea: A gun that shoots (gun that shoots lasers and has alt-fire that makes sandwiches and launches grenades)
Idea: A gun with an alt-fire that cleans dishes, cleans dishes, and can improve TV reception
Idea: A gun that shoots (gun with an alt-fire that prints money, launches grenades, and can improve TV reception) and has an attached hidden turret
Idea: A gun with an alt-fire that cleans dishes
Idea: A(n) board-with-a-nail-in-it
Idea: A(n) sword
Idea: A gun that shoots (gun with an alt-fire that launches grenades and can improve TV reception)
Idea: A(n) silent turret
Idea: A(n) hidden turret
Idea: A(n) ancient board-with-a-nail-in-it
Idea: A gun that shoots sniper rounds and has an attached AI turret
Idea: A(n) mace with an attached gun that has an attached AI turret
Idea: A(n) rapid-fire turret
Idea: A(n) mace
Idea: A(n) ancient sword with an attached sword
Idea: A gun with an alt-fire that cleans dishes and can improve TV reception
Idea: A(n) advanced mace
Idea: A gun that shoots standard bullets and has alt-fire that allows you to swing from the ceiling and can improve TV reception
Idea: A(n) other-dimensional sword
Idea: A gun that shoots lasers and has an attached instakill turret
Idea: A gun that has an attached hidden turret
Idea: A gun that has an attached hidden turret
Idea: A(n) silent turret
Idea: A(n) sword with an attached hidden turret
Idea: A(n) plasma sword with an attached advanced board-with-a-nail-in-it
Idea: A gun that shoots death beams
Idea: A gun that shoots (gun with an alt-fire that prints money and makes sandwiches) and has alt-fire that can improve TV reception, sucks nearby ammo to you, can improve TV reception, tosses salad, sucks nearby ammo to you, allows you to swing from the ceiling, and cleans dishes
Idea: A(n) AI turret
Idea: A(n) rapid-fire turret
Idea: A(n) mace with an attached board-with-a-nail-in-it that once belonged to a powerful warrior
Idea: A(n) ancient board-with-a-nail-in-it
Idea: A gun with an alt-fire that allows you to swing from the ceiling, prints money, tosses salad, prints money, cleans dishes, tosses salad, and makes sandwiches
Idea: A(n) ancient sword with an attached advanced sword
Idea: A(n) overpowered turret
Idea: A(n) mace with an attached mace
Idea: A(n) plasma sword
Idea: A(n) board-with-a-nail-in-it
Idea: A gun that shoots (energy mace ) and has alt-fire that launches grenades
Idea: A(n) energy mace that once belonged to a powerful warrior
Idea: A(n) board-with-a-nail-in-it
Idea: A(n) ancient board-with-a-nail-in-it with an attached plasma mace
Idea: A(n) hidden turret
Idea: A(n) AI turret
Idea: A gun that shoots (gun that shoots (AI turret) and has alt-fire that allows you to swing from the ceiling, can improve TV reception, and launches grenades) and has alt-fire that tosses salad, cleans dishes, and makes sandwiches
Idea: A(n) rapid-fire turret
Idea: A gun that shoots death beams
Idea: A(n) ancient board-with-a-nail-in-it with an attached hidden turret
Idea: A gun that shoots (overpowered turret)
Idea: A(n) board-with-a-nail-in-it
Idea: A(n) advanced sword
Idea: A gun that shoots (AI turret) and has an attached hidden turret
Idea: A gun that shoots (gun that shoots lasers and has an attached rapid-fire turret) and has an attached AI turret
Idea: A(n) sword
Idea: A gun that shoots standard bullets and has an attached instakill turret
Idea: A(n) plasma sword