Form teams of 2 or 3.
Go back to the original scanario you wrote and have each person share theirs.
Now you and your partner(s) discuss how this unit/theme might be taken to the next level of SAMR. Don't worry about taking it up to Redifinition... just try to move it up one step.
Take some notes on how this might occur.
Next, move to the next person in your group and use the same process. Do this for all members of your group.