Yup, you know the title. Make up some new weapons for any character. Examples:

Crash- Machine Wumpa

This weapon has more ammo than Crunch's weapon, the Hot Rivet. It has about 300 ammo points, plus Crash can shoot faster than Crunch and inflict 2% more damage. May probably have disadvantages over targets since it'll take 10 for each bullseye target.

Von Clutch- Ice Launcher

This weapon Clutch has only hold 50 ammo points and for every shot, it takes two seconds until you can fire another. This weapon, however, can inflict good amounts of damage and he can slow down opponents with his own icy chill. Has a big blast radius, so anyone who is in the icy radius can slow down as well, except Von Clutch himself.

Anyone else?

Crunch: Boxer Blindfolds

When Crunch shoots these (he has a supply of around 400), anyone who hits it gets a pair of his boxers on their head and they can't see and then they crash. May not do a lot of damage, but the results are well worth it.

Crash: Whoopie Cushion Bombs.

When Crash fires these (he has 30), if a car is hit by one of these, the driver "cuts it" big time and his car's health is drained to the red. One more hit, and the car explodes due to flatulence.

cortex:big brain
fires 400 copys of his brain

Nice ideas.

Nina: Lava Landslide

It has 1 ammo but that is because it's really good. It throws down a landslide of lava to the area behind you. It also a one-hit K.O.

Clever!

N. Gin: Nitrogen bottles. He has about 900 of them. Whenever someone runs into them, their car slows down and they get fat. If they crash into another one of these, their car explodes on impact.

Their cars get fat!!! Oh man, that's hilarious.

Pasedena: Mine Explosion
She throws a mine right under the closest car and when the time expires: BOOM!!!!

The cars themselves don't get fat. It's the drivers that get fat.

Von Clutch: Bean Burito Bombs!

When he throws these, anyone who runs into them starts cutting the cheese rather badly. If they crash into another one, their car disappears and they have to use their bean power to catch up!

Bean Power?! The drivers get fat?! Plus, the fact that the Bean thing is Von Clutch's...

Yep!

Coco: Nail Polish

If a driver crashes into one of these things (Coco has about, 10,000 of these), they explode and then they reenter the race as a pink car, and the driver is completely pink.

Hmmm...

Pasadena's new weapon- Fireball Rifle

This new weapon Pasadena has can hold twice the amount of ammo as her spinning tornado lighting and once she strikes her opponent with a devastating fireball, whoever was hit will burn. He or she will keep burning until his or her health reaches 0, that includes cars that are difficult to destroy.

n-gin
liquid nitrogen: he has about 200 of these anyone hit gets frozen and then their car falls to pieces it is a one hit koran weapon and while using it n-gin puts on a crazy russian accent

Crash= Chicken Bazooca

The shot chickens go into the ecsaustpipe and blow the car up.

Crash: (must be in the costume Organization XIII Coat)
Twilight Portal- Sends the enemy who crashes into it quite far back in the race

Crunch:
Nuclear Mess- Takes out every racer on the track including Crunch.

Crash: Poop Gun

Launches Poop just like Crunch's weapon, only poop.