This works easily if you have high experience in Herbalism, First

Aid, Skinning, Leather Working, etc. Get the materials needed for

what you want to make. For example, for First Aid, kill lots of

humanoids for linen cloth, wool cloth, etc. Then, just sell the

materials to an NPC. If you want more money (for example for

Skinning and Leatherworking), make something out of the leather,

then sell or auction it off at the nearest auction house.