Well, an afternoon, plus baking time for six basic muffins and variations, plus cooking time for the applesauce that went into one batch of muffins, plus the cost of all the ingredients, plus the time it took to write up little flavor labels for each muffin and individually wrap them in saran wrap... And transit time by bus to and from school... I baked the muffins for fun, though, and only decided to sell them when I did not have room to store them and wasn't eating them fast enough.

I mean, I'm not knocking it as a way to spend time, or I wouldn't have suggested it, but I'm not still doing it. I got thirty bucks, spent it on a used camera and a necklace, and called it good. And I had my laptop open the entire time and did exciting things like read Less Wrong, which is more or less what I would have been doing if I'd stayed home to goof off instead of selling muffins.