i actually really stuff my pm karo: blotting sheets, powder or compact blush, 2 lipsticks, a dual mascara/eyeliner, a lip pencil, sometimes also a lip gloss. And it all fits, albeit with some organization/packing, without ruining the shape of the karo.
i also slip in my metrocard there from time to time. it's soooo easy to use.
my karo is chevre and it's so, so durable. it gets a little powdery inside but is easily cleaned with a swipe.