In a poem of 26 lines...
use the letters a-z (in alphabetical order)
as a the first letter of each line of your piece.
If you want to get really crafty, try z-a!
Lines may be as long or as short as you wish,
but you may not have more than 26.
In addition, you may get creative with your letters
(unless of course you can use zebra and xerox
in your poem.)
I'll start it off so you can see what i mean.