Economist post-tenure hobbies

In the last couple of months I have learned that two of my economist friends have embarked on novel post-tenure hobbies. One is restoring old tractors. To my surprise, there is a whole industry devoted to supplying this hobby, such as this store. The other has become a part-time lavender farmer. Oddly, the website for my friend's lavender farm does not highlight the fact that it is run in part by an economist, something one might imagine would be a major selling point.

Lately, my hobby has been buying too many books at Borders before it closes for good. I'll have to think of a new one after that.