Best birthday present ever

An equation quilt from the now-defunct MIT Hotel. We first saw these when staying there during the grad school visit circuit, but were too goody goody to have one disappear into our suitcase. We've regretted that decision ever since.

Jacob has been unsuccessfully hounding Craigslist and eBay for ages searching for one of these, but I worked a little of my magic and procured one as a surprise for his birthday.

Happy birthday, Chou!