This activity is appropriate for when the team needs to look ahead and reflect about the future, thinking about what they expect to happen in a given time frame.
Running the activity
1. Ask the participants to think about the given context, and individually choose a person for whom they would like to send a letter in the future. (it can be the product owner, project manager, another team member; whoever they think is appropriate)
2. Ask the participants to individualally write a short letter (one to two sentences) to that person, saying whatever they want. It can be, for example, congratulating the receiver for an accomplishment; or maybe explaining how the team was able to do something. The letter should have a date in the future.
3. Read the letters out loud, discuss and keep them for the future.
One interesting aspect of this activity is who the participants write the letter to. Some will think about the PO, others will think about a manager and some may even address the letter to the team. This helps to surface who each person is concerned about, and what are the things that they want to accomplish or see as possible problems.