Here's a fun get-to-know-each-other assignment for a Creative Writing or English class. It works especially well in the fall or spring, since there's an outside component of it. Concepts involved are personification and descriptive writing, and it encourages small group sharing, a key part of the peer review process so valuable in English classes.
You'll need at least a few days for the kids to seek out a tree that they recognize some aspect of themselves in. Encourage them to really look for an interesting tree, not just use the first one they see. A walking tour in the neighborhood of your school, if that can be arranged, will stimulate the class as a whole.
Have kids take a photo of their tree when they find it. See which details (shape, age, color, stature and size, surrounding environment) reminds themselves of some part of themselves. For example, a tree with some toys left nearby might demonstrate how important childhood memories are to the writer. A tree a bit off by itself might suggest the importance of privacy to the writer.
The details that describe the tree can lead to personal examples as the kids work on the analogy of how the tree is like them.
The final work can be either prose (250 words seems to work well) or a poem.
If you Google "trees" you will find lots of unusual tree shapes that you can share and discuss in class to get the kids responding before they select their own.