I can see doing a few of these in advance at the beginning of the year as thank you's for presenters and field trips :) already ready to go! :) Or a wonderful Teacher Appreciation Card - using a thumbprint from each child to make the balloons!
Mothers Day or Teacher's Appreciation handprint flower card. At Montessori they are with their teachers for three years. I'd like to try to remember to do a handprint each year, then give this as a gift at the end of the third year.