I bought this mug as a gift for my crystal-selling, cat-loving witch, who recently started drinking coffee again. And yes, it DOES make her fly her broom even faster!
She absolutley loves this mug!
As for me, the "coffee-snob" and mug/stein enthusiast, who brews the coffee (French press only), and hand washes the mugs, I can say that this mug is very well crafted: it is very solid, easy to wash, and looks new every time!
We are both extremely satisfied with this purchase.