Bottle of water (or any other liquid)

[darkely]

Is there anyway to have the player hold a bottle of water (or something with liquid) that they can use to drink (for health)?

I would want the bottle/whatever container with liquid to be able to be visible on screen, have the liquid/container react to light, and have the liquid move when the player moves. Is it possible to do? if so how?

Here is a video that shows what I would like it to look like (imagine it in Amnesia though :p)...

[video=youtube]http://youtu.be/YODuyF0nTzg[/video]