"Q" Scrabble Mug - Skyfall
By Wild & Wolf Ltd.
The mug used by Q in Skyfall is not a custom work, but a readily-available mug licensed by Mattel. Strangely, due to some sort of weird licensing issue, the proper mug can't be purchased in the US; there is a separate version with a different font available stateside. So, if you're in the US and want to get the right one, you're pretty much limited to buying from the UK eBay site, as other sites don't even ship them to the US, so far as I've seen.
This is really the only thing in my collection that I use on a daily basis. It's not terribly hard to replace and, honestly, how else am I supposed to get screen-accurate tea stains?