lau's items

lau seems to have very strange ways of unlocking his items.

i was messing around in vs mode with him vs my conquerer jacky, and i unlocked items from the weirdest things.

i got his dunce china bowl hat, but i dont know how

i got knocked out of sarah's stage (the coliseum one) and won an item-- no clue why, then i knocked jacky out the next match and got another item

i had a similar situation at kage's stage, the open one with the blowing leaves

shun di also seems to have unusual ways of unlocking his items

i have various shoes with shun, and a few hats, not many items though, i dont play him much

for lau i have tons of greaves and shoulder pads, the 100 win opera mask, the coin hat, the dunce hat which doesnt look bad at all, and 3 wrist bracelet things
did anyone else notice these trends, or does anyone know any ways to get more of shun's or lau's items?

 

some of the weird ones i won for lau were:
glorious pads
yellow greaves
phoenix pads
thats all i can remember for sure