BubbleGum - Can be used to block one item used on you (also, makes you immune to bubblegum on the ground and if you use it when you have a bad item on e.g. bomb it will disappear.)
Cake - one of the best attacking items, because it autoaims and compensates for speed
Plunger - if shot forwards, it can latch on to a player (or wall to go faster). if shot backwards it makes you somewhat blind like in mario kart with the bloopers
Bowling ball - should be called a boomerang. if shot well then can easily take out others, if shot poorly then you should be ready to get hit
Parachute - Blatant Rubberbanding. use this to put a parachute (and slow down) any competition in front of you.
Anchor - Slows you down
Swapper - the best name you could come up with, STK team? anyway, switches bananas to boxes, boxes to bananas, nitro tanks (any) to gum and gum to big nitro tanks which is good
Basket Ball - RunStopperâ„¢
Swatter - hits enemys and also if you have a bomb it will whack it off