Eve's original crew's weapons were roughly based off those of the Earthbound/Mother series:

Lucas and Flint wields sticks, Evenkite's weapon was a staff that could freely change from a normal one, or split into three, depending on how she meant to use it. However, she tends to lean towards using it as a simple staff because it's more easy to control this way.

Ness and Ninten wield baseball bats, and Idocrase's weapon is a spiked bat.

Loid and Jeff both wield various guns, and Calomel's weapon is also a gun.

Kumatora and Duster are interesting in that they don't have traditional weapons but specialise in punches and kicks and equip different shoes and gloves to aid them. Crystal Quartz had spiked shoes and Hematite had spiked gauntlets, who both form Hartlequin Quartz, who has both.

Poo and Teddy wield swords (and in Teddy's case, knives as well), and Kornerupine's weapon is a dagger.

Ana and Paula wield frying pans, which is Rutile's weapon. Many stupid jokes arise from this. Most end in pain.

And there's Boney, who being a dog, attacks with biting. No one here has a weapon like that but I'm sure Eve's smile is close enough. And Pippi and Salsa, but they don't have any weapons either.