This would be good for something like April Fools, but these are some funny weapon ideas I got:
Pick up gloves: You can temporarily pick up monsters and throw them.
High Five gloves: You can high five monsters, which cause them to let you right through for a small amount of time.
Swim gloves: This could be used outside of a April Fools event, but gives you a bit of faster movement when you use it, and also tackles monsters to the side.

If you have any ideas, feel free :D