The high probability your wackiest party member, will use some sort of bizarre and, well, improbable "weapon" — that is, in the sense of an object you could conceivably hit something with. And some of these 'weapons' don't even go that far.
This usually seems to just be a way to give that character some sort of upgradeable item to explain ongoing power increases. Curiously, every weapon shop will sell these upgrades, despite there being seemingly only one such user on the planet.
Many games also have a gag weapon for each of the party members, which is essentially an Improbable or Nerf Arm version of their regular weapon, such as a Paper Fan of Doom for the sword-wielder, a broom for the White Magician Girl, or a squeaky-mallet for someone who normally wields an axe or hammer. Of course, this might end up subverted with an Infinity Plus One Marshmallow Slingshot.
This fighting style is surprisingly not that far from reality when you consider how martial arts weapons have included not just spears, swords, and knives, but farming tools, boat oars, fans, metal rings, and... small wooden benches.This doesn't even go into the army's trench shovel or some of crazier weapon combinations from about the 17th to early 20th century.
Note: Many "improbable weapons" can indeed cause significant damage. Examples of these are:
• frying pans
• a solid mass of frozen food
• bed warmers
• rolling pins
• Baseball bats
• clothes or cloths
• The Biggest one is the Scythe
Scythes look good, but in reality are impractical weapons; Both the blade and the point face inward, making it impossible to hit an enemy from a distance. Further, traditional agricultural scythes have a somewhat curved shaft with handles mounted on the sides, further decreasing the range.
However, scythes have been used as polearms before, though this usually involved reforging the blade and/or adjusting the angle of the blade.
Dosen't make them any less impressive or menecing though