My most recent visit to a paint your own pottery place was to Glazed Expressions in Chicago with my roommate Taylor. Taylor made a vase and I opted for salt and pepper shakers (before firing and after firing pics below).
Here's how it works: You go in and pick what piece you'd like to paint (prices range from $5 to quite expensive). My salt and pepper shakers were $14 I believe. On top of that, you pay a studio fee of $8 per person. So, it is a little pricey, but it's great for a fun rainy day activity or a special treat for kids. The person working there was very helpful, gave thorough instructions, and played a nice mix of Beatles and 90's music while we were there :)
Anyways, if you're bored or feeling creative and need something to do, check out a paint your own pottery place near you! I completely didn't mean for that to rhyme :)