Have:

3 Jolly Mewtwos
3 Shiny Jolly Mewtwos
3 Timid Arceus
2 Shiny Garchomps
and one of each for everything else.

Wants:
Leftovers
Assault Vests
Focus Sashes
Life Orbs
Air Balloons

Special Wants:
Ability Capsules
Mega Stones

Oh but what is the reward for special wants?

You get a special Shiny Gensect along with your first pick. Of course, if you just want a Genesect to trade, that's fine too.

Everything is based on availability, but there are plenty of Genesect.

Picture in next post is related.