User Review: REI Insulated Mug
Price Paid: $4
I love this mug. It's tough, lightweight, and cheap enough that I don't worry if I do break it. I've tied a string from the lid to the handle. In the past, that's my most common way of "breaking" a mug. It even goes through the dishwasher like this.
Finally, it has some measurements on the outside of the mug. I've used them once or twice over the last three years (yes, the mug lasted that long) and now they're starting to wear off.