Young poets get inspiration and guidance for making word association poems with the Visual Thesaurus. Your class could complete this project with nothing more than a pencil and paper as well. A nice one-off for a substitute during your poetry unit, or when you just want to refresh your curriculum with something instructive, but active and fun.  You could relate it to your current in-class text. This is a well-supported resource. Hyperlinks to excellent, relevant, supporting materials.