one Christopher did with his class when he was little. It is framed and was given to my mother in-law as a gift from Christopher. His has a poem and the age and date on it. Vera I think you would like this around the holidays.
For unit on plants, I would use this idea to have the students draw the plant life cycle on paper plates. Each student would have their own plate and draw each step of the plant life cycle. It would be a good assignment for independent practice.
Crayon heart wall art - arrange in a heart and melt crayons with a blow dryer. add a picture in the middle to use it as a frame. Okay I've seen the crayon melty thing before but I love the heart/picture frame idea!