I lately got my hold on one of the former slave monkeys in the dead mines, which comes to run around with his pickaxe. Based on this I developed the following idea: Monkeys are smart enough, the used to work and mine before, so it should be possible to teach them a gathering profession! Imagine this: you are running around with your Monkey Garrosh (I strongly recommend this name) and have "Collect Node/herb/Skin" on autocast, so whatever is need to be done, is done by your work monkey. Maybe there can be introduced another form of ability cost like one banana per Use. I think this would be really fun, because you can pick two "useful" professions without having to worry for the income of material. As an addition maybe you could use seagulls to catch fish for you or boars (which tend to be intelligent too) to get herbs or dig out some archeological stuff
And don't come to me running with "animal protection", I freed this poor monkey from slavery, and everyone of us, is using their mounts to jump down high cliffs, ditch them underwater and nowadays won't feed their pets at all because of Glyph of Pet Mend!