I have been playing a lot Mass Effect lately and I noticed the same coffee mug throughout the game. You can see several lying around the Normandy and on human colonies, stations and labs. If you haven't noticed it, it is actually on the load screen of Mass Effect 3. Suggestible as I am I wanted coffee and a mug like that every time I saw it in the games.
The coffee was easy, but to have a mug like that would require a bit of work. I couldn't find a mug with such a tiny handle so it is not as accurate a replica as I would like. To make it more interesting I embellished it with an N7 logo on the side (I imagine Commander Shepard should have a mug N7on it!). I also added the Paragon symbol on the inside bottom of the mug (+2 Paragon Points for finishing your coffee).