Full Metal Kirby
4A000000 80000000
XXXXXXXX 00000000

XXXXXXXX:

pokballs 1462C4CA
Smart bombs: 1462C39E
Party balls: 1462C38A
Bomb-ombs: 1462C36E
Gooey bombs: 1462C374
Also, to add to the list for more-the-limited item amounts (Most noticeable on Training):
Multiple Smash Balls at once: 1462C3A0 (Replace XXXXXXXX with it.)

All credits to Full Metal Kirby.