Today was an accidental no-spend day

What does a day-off from work due to Veteran's Day and two looming deadlines for grad school assignments equal? An accidental no-spend day! During a mid-week vacation day, I would have normally gone out to shop, seen a movie, met a friend for lunch, or at least take a coffee-run to Starbucks or Dunkin' Donuts, but with a group project to prepare for and a paper to finish by tomorrow, I did the practical thing and did my school work and some other tasks I needed to take care of. I also took a great mid-day nap.

If I ever start my own company, I will have plenty of couches for people to take optional naps in lieu of lunch breaks, because I for one feel so much more productive after a nap! But I digress, maybe on a week when I have a fully stocked fridge and a week's worth of money on my Metro card, I will try a whole no-spend week...well maybe I'll try that after the holidays.

What is the longest stretch you have gone without spending money?