You could always go shopping for stationary: theraputic and vaguely useful to your thesis- you could pretend that those cartoon character files and glittery (scented) gel pens are to help you 'organise' and 'structure' your work?
RE: food and crushes - these could be a dangerous mix. I always seem to be eating chocolate whenever I bump into my crush in the lunchroom (meanwhile he eats fruit, herbal teas etc. Once when he walked it, I was scoffing a KitKat and I deftly gulped it down and chucked the wrapper into my book bag without him (or anybody) noticing...I think