About the only place I spend cash regularly is the farmers market. I typically take out 80-120 dollars on my way to the market and come home with anywhere from 0-60 dollars and a pile of produce. I also probably bought coffee and something for breakfast. As far as spending goes, I know the money probably went towards food (or was it flowers or some crafty thing?) but it's really just a black hole where I ultimately end up categorizing it as "cash spending" in my budget software rather than trying to rebuild where exactly it went.

Credit cards work much better for me.