No one thought it was possible.......
*slaps her self and says: Just get to the point*
You can clone pokemon on crystal version!!!!!
Give two items to two pokemon.
Then save now go to a pc. go to bills pc deposit the two pokemon you gave items to in any box except box six.
When it says saving....... don't turn power off.

Turn the power off. it could mess up you're game though.... but when you go to withdraw it hold A for a while. (if it is messed up)then just release the messed up pokemon. this cheat works 75% of the time.
Hope I helped. by the way my name is Jade and I love pokemon!
See ya! ^_^