This is like the pokemon cloning but its items
#1 got to the battle tower the go to pc have a box thats full of pokemon
#2 give the pokemon the item u want to clone(if you have more than 1 give it to another pokemon)(note: you give the item to the pokemon in the pc not in your party.)
#3exit the pc and save.
#4now go back to the pc and take the item(s) back,DON'T SAVE.
#5 now talk to the wireless multi battle lady(the one you see closest to the pc)and talk to her.take either level 50 or open level.
#6 when you have the 2 pokemon picked press O.K and she will say before you battle you must save select yes and there will be a 2 or 3 second pause when she talks restart the game and go to your pc. the items will be in your bag and the pokemon you gave them to in you pc.
#7then go back to the pc and give the items in your bag to pokemon in your pc not holding items . do steps 3-6 and keep doing this to you have the amount of items you want.
thats it this is my first cheat i ever submitted so i hope this helps.