I found this website. It’s really just a list of projects, meaningful ways to spend time, submitted by various people. Here’s an example:

Project 98

Buy a book of perforated postcards that are of an interest to you and a friend (Beat poets, Monet paintings, etc.). Send one every day to your friend. On the back make up a story about the picture on the card, or reflect on a time when something about the picture had some relevance to the two of you (did you see the painting featured on the card together at a museum?). Push the envelope in coming up with unique interpretations of the picture and its meaning for the two of you.

Do this until you have sent all the cards.

Michael K. Gause
Minneapolis, MN

I think I’ll try it.