Vibration ball:The more you press the A button while the pokemon is in the ball,the higher the catch rate for the next pokeball.Lol.Can only be Bought at the end of pokeball factory.
Frustartion Packet:After pokemon attacks 1 time,Pokemon is reduced to 10Hp,however,the evasness stat becomes x3,and the Packet is destroyed.Abtonable,only by using the move theif on grass type pokemon in friend safari.
Magicarp armor:after 2 turns,the user will lose half of there defense stat and they cannot attack or switch out,then after the oppent attacks,the oppent becomes a magicarp at 1 hp that only knows splash,then,If you do not deaft your oppnent,you will become the magicarp,and so on.(Complicated)Can be bought in any towns near the sea.