The Various and Gundry item pack includes:

• The Bazooka, a powerful rocket launcher which can hit from anywhere--provided the wielder has careful aim. An explosive favorite of miniature pink infantry everywhere.
  
• The Cornobbler, an incredibly fishy half-assed shotgun. I spent far, far, too long on it, although I did learn a lot about how sprites work. Or, more accurately, all of the ways in which they do not.
  
• The RBG (Random Bullet Generator), a heavily modified magnum as fickle as fate itself.
  
• The Teddy Bear Launcher, the cuddliest gun in existence. Just don't let it put you to sleep, or you'll never wake up again.
  
• The Smackstick, a complicated, semifunctional prototype which really needs a better name. In its unfinished state, it will not generate naturally in the Gungeon, but it can be spawned in with the give command.
  

Idea credits:
The RBG is due to Reiji on Discord, who also did the hard part of the spritework.
The connection between the Bazooka and Worms was inspired by Faffy on the discord server.
The Cornobbler was created from a half-assed request by Chris on Discord. The first sentence of the description is a direct quote from him.
The Teddy Bear Launcher is due to rocsorc on Discord, who gave me very detailed stats and was very responsive. Truly, everyone should aspire to be like this paragon of requesters.