I walk a lot (e.g. if your only excuse for not doing something is that it's far to walk, it's a chance to walk more).

I also pay attention to drinks...for example, if I buy a bottle of Coke, I leave half of it, take it home, put it in the fridge and forget about it. The next day, I'm happy to see it, and it's like a 2nd drink. Only, it's fewer calories.