An Elfchen is a German poem that contains only 11 words. The form is 1-2-3-4-1. Because if its simplicity, it's a fantastic way to practice your vocabulary.
Or, if you're sick and can't seem to shake off the crud of the decade, it makes a very succinct blog post.
Krank sein: ein Elfchen
mehr Tee trinken
bitte wieder gesund werden!