Im currently looking for these shiny pokemon:

Poliwag
Aipom
Smeargle
Apharos

Since no one has responded yet, i figure ill throw in something good for you. How about any item in the game (besides key items of course) that a pokemon can hold. Ill give you one.
I can trade any of the first gen pokemon for it, a good majority of the second gen, and pokemon from the 4th gen. (i can even get them at high levels, if you want.)
Please help. (: