I use to take stuff from home to my job; a notebook from a hobby I work on or care for, a book I'm reading, sometimes I made a list of things to "explore" during my lunch period (where the nearest library is, for example) or I got a pedometer and used the hallways at work to try and get a bit of a "walk" in :-)

My job would get too repetitive for me and boring so I'd make charts and manuals and try to do "timed" trials, testing myself to do it better or faster or to reduce it into a "checklist" like a to-do list that I could check off and get the satisfaction of seeing what I'd done (even though it was the accounting department and the same invoices I'd done the previous month :-)

I'd think about the things I disliked most and see if I could do more of them, better (like filing, phone calls, putting up with my VP boss ;-)

Think of some individual thing that really bugs you, like when someone asks you a particular question over and over or bugs you too many times about the same thing, etc. and come up with a really pleasant, nice, polite, helpful reply that you'd never dream of saying and start saying it each time with a really nice smile/sincere voice and after the first or second time it will become silly/funny to/for you, kind of your own code/joke.

Take a particularly bad problem and "name" it. I named the office candy/snack machine "Huge Hugh" and started treating it like it was alive/a threat to me :-) I told a friend at work and we'd laugh together, especially when I'd describe "him". When I'd go into the office kitchen I'd "avoid" Hugh, like he was going to reach out and grab me, especially when my friend was around to see. It sometimes worked too, I didn't buy as much junk. Make friends with a water fountain or challenge a coworker to a smiling contest or something. I always found things easier if I involved someone else.