The students could write letters to their parents, teachers, or friends but they would have to be appropriate letters (not like the ones Sahara wrote to her father). They would learn how to properly write a letter and label the envelope to be mailed.
If you are implementing the Journeys Reading Series, these "kid friendly" illustrations were created as a model for TEACHERS to use during whole group instruction or mini-lessons, when targeting THANK YOU NOTES and TIME WORDS. These are NOT worksheets.
This is part of the free editing set from First Grade Wow. They keep it in their writing folders. It helps differentiate learning and gives each student focus. There are many other useful pages in the packet, too.