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).
Step 1: What you will need
Step 2: Tape it up
To get my mug to look like the one in the game, I masked off the top inch and a half of the mug so that it will remain white. I debated what to do with the handle, whether to paint part of it black to make up for the fact that it doesn't look like the one in the game but decided it would just look weird that way. So I masked off the handle too.
Step 3: N7 Logo
I wanted the N7 logo on the black portion of the mug. I positioned it so that the logo was facing me while I drank my coffee (I am right handed) optionally I could have place the logo on both sides.
Step 4: Paragon Logo
Step 5: Paint
Step 6: Clean it up and bake
After removing the rest of the tape, I noticed the paint bled through in some areas such as the handle and the logo wasn't as clean as I wanted it to be. The paint can be scraped off with a knife and for larger areas a kitchen scrubby worked well. The paint instructions require you to wait 24 hours before you bake. The next day I placed the mug in the oven first, I then set the oven to 150C (300F) and let it bake for 35 minutes. After the time was up, I turned off the oven, leaving the mug inside and to cool slowly.