Cheese,
For charity, our school is having a non-uniform day (also end of term). So with the new white beats my aunt gave me to pay for the broken ones, I have painted a rainbow mushroom cloud, for the shirt; I'm going for a 20% cooler shirt which arrived earlier today, and for shoes I'm going for ones with Discord painted on the soles.
The people organising are wearing "Save Children!" shirts to raise awareness for lack of water in poorer areas. (but seriously, they don't get another clean water to live.)
To counter this, my friend is going in with a "Save Derpy!" t-shirt.
With 5 other, we are going for Twilight, Rainbow, Rarity, Pinkie, Applejack and Fluttershy.
7 bronies, all in one year.