Could someone please tell me if any pen will work with my intuos (bamboo)? I wanted the samsung S pen that uses Wacom digitizer, but I think they only work with galaxy notes... I just want a pen that is thin and the stock intuos pen isn't like that of an old bamboo style pen. It's more bulky, so that sucks. :<
No, Wacom tools are more-or-less locked to the series of tablets they came with, with a few exceptions.
What you probably want is the "classic" or "slim" pen, which is available as a separate purchase from Wacom, or off fleabay as long as you're careful about what model you get. If it's an intuos 1 tablet that you have (model number starting with GD), I'll happily swap a classic pen for a fatter pen.
"Full price" classic pens start at $50 for the Intuos 3 range, $70 for the Intuos 4/5/Pro/Cintiq.