The grooks are characterized by irony, paradox, brevity, precise use of language, sophisticated rhythms and rhymes, and an often satiric nature. Wikepedia
You can read more examples from Piet Hein to get inspiration. They generally are about making the most of our lives. Write your poem somewhere on the interwebz as a response.
This Daily Create has been recycled from previously published ones:
• #tdc1403 Today we write a grook (Nov 11, 2015)