I think I may be a bit late in discovering these Roald Dahl mugs over at McLaggan Smith Mugs, and I am so glad I finally did! The mugs feature illustrations by Quentin Blake, each from a particular Roald Dahl book, along with a quote from the book on the reverse side. I'm a big Roald Dahl fan and a hot beverage lover, so I think I am going to have to ignore the fact that I am on a saving-up-for-uni-and-must-purchase-only-necessities-budget, and get myself one. I have my eye on The BFG mug, as The BFG was my absolute favourite Roald Dahl book when I was little.
If you want to nab one for yourself too they are available here.