I wrote words on slips of paper.  I labeled three bowls:  
               
                 Nouns    Verbs     Adjectives

I put the nouns in the noun bowl, the verbs in the verb bowl and the 
adjectives in the adjective bowl.  I then sat down and typed some
examples of Haiku, breaking down the syllable count for the students.  
The handout looked something like this:
                                            
Haiku
 
	Haiku usually has three lines and 17 syllables distributed in 
lines of 5 syllables, 7 syllables, 5 syllables.  The following examples 
were found on the internet.
 
Twinkies
 
Moist gol/den sponge cake
Cream/y white fil/ling of joy                    
Boy I love twin/kies
 
Eagle
 
A bald white ea/gle
fly/ing high to the moun/tains
finds food with sharp eyes
 
I then had the students divide themselves into groups of three or four 
and draw several words from each bowl. They were then instructed to 
write their own Haiku using the words they picked from the bowls.  
 
This lesson not only reinforced their knowledge of syllables, but also 
refreshed their knowledge of nouns, verbs and adjectives.  It could be 
used for just about any grade level, just adjust the words to the age 
group of the students.  I tried to use words related to the high school 
age students I was dealing with.  The activity was a great success, the 
students enjoyed it, and really turned out some great poems!