There was a bakery/coffee shop half a block from my office (that recently is no longer with the program) that I'd go down to, I'd either offer to pick up coffee for everyone (free dine for me) or I'd grab a croissant or cookie as an afternoon snack. Did it once a day for two weeks, took no time at all.

Now pretty much every Burger King in the area has joined the program, so I could probably get it done in one day by taking a drive around town.