This image the other day was hosted on GameFaqs'.I shot where Saix is holding a Banana for a weapon. So far there isn't much info yet to howw many items can obtained inside the game.
Here are the listings as followed.
Xigbar - Hair Dryers
Xaldin - Brooms
Vexen - Pot Lid
Lexaeus - Squeaky Hammer
Zexion - Sandwich
Saïx - Banana
Axel - Pizzas
Demyx - Tennis Racket
Luxord - CDs
Marluxia - Ladle
Larxene - Dragonfly Hairclips
Roxas, Xion - Umbrella
Source: KHInsider