Pic Lits is a great site which could be used for older grades, but the pictures could be used as writing inspiration for all grades.
The site allows you to drap and drop words or write freestyle, you can keep digital copies of the writing or print them off.
1. Create shared poetry each day which can be displayed around the room.
2. Create pictures with adjectives to broaden vocabulary.
3. Use a variety of different poetry genre’s.
Here are a few I prepared earlier.