I use Estee Lauder Double Wear foundation, so once that's on, it's on for the day. Dust it with powder and blusher + mascara on = no carrying make up around! The only thing I'd ever take would be lip balm in winter time.
To college, I take lip balm, blusher, foundation and mascara. I only ever really use the lip balm,though.
To a night out, I tend to take everything. Although thats not loads for me - lip balm, foundation, powder, blusher or bronzer and brush, mascara, eyeliner if I'm wearing it. Again, I rarely use any of the items. It's almost like a reassurance, in case it rains or I get really sweaty and my crappy cheap make up comes off
I never bring make up out with me on a day to day basis - I just don't feel the need to touch up. But if I'm going out in the evening, the only things I'll really bring are Superdrug non-shine powder pages (a life saver) and possibly lipstick
If I'm just out for the day I take a lip balm, that's probably it. If I'm out for the night I'll probably have lipstick/balm and eyeliner (it always smudges) with me. I pretty much never end up touching up my make up while I'm out anyway.