Coffee and Econometrics merchandise (not just coffee mugs) is now available. Check out my Cafe Press site. Slogans include:
"No cream, no sugar. I like my coffee with econometrics."
"When coffee isn't enough, try econometrics"
"Coffee and Econometrics provides a good fit"
"Increase your power with Coffee and Econometrics"
"You want WHAT with your coffee? Econometrics... is that weird?"
"Coffee and Econometrics are complements"
In a comment, let me know if you think of any other good slogans to slap on a coffee mug.