I have used these poetry frames in my classroom to help students learn adjectives and verbs. The purpose is to develop and expand their vocabulary. With little ones, we brainstorm words and the children choose the words they like and insert them in the frame. With 2nd grades and older, I have students use a thesaurus.
A sample poem might be:
I like horses.
Hoses clop. ...etc...
These are a fun partner, or cooperative activity and make a nice bulletin board.