How to eject my camera when i can't find an icon for it

I want to eject my camera from my macbook pro but I can't find an icon on my dock, or in the computor section of my finder. I therefore don't know how to eject it since i can't drag it into the trash or select eject from the list of options since there is no icon that i can find of my camera on there! Does anyone know how i can safely eject it? I also keep on putting memory cards into my macbook pro and then taking them out without ejecting them - is that a bad idea? If so then I don't know how to eject them either since i can't find them on my computor either!

My ipod doesn't come up as an icon on my dock either, it just comes up in itunes - is there some way of causing icons to pop up on the dock?

Sorry - a lot of questions there! It's a new laptop!

Thanks