I try to make the first and last days of each school year special. We usually have something to give to the teacher for a Thank You for a good year and we usually try to have something for the bus driver too as they did make sure that Robert was safe to and from school each day throughout the year.
But I also have a few things that I do for Robert - first is that there will be pictures as he gets on and off the bus tomorrow. But I also have purchased Crayola's window crayons and Window Markers. SO there will be a little message on the door as he leaves and a new one when he gets home. Something as simple as "The LAST DAY of SCHOOL" or "Good-Bye 3rd Grade" then when he comes home it might say "Look out 4th Grade here comes Robert" Or "Welcome Summer!"
I usually have some type of small gift for the first day of summer too. This might come on the last day of school or it sometimes waits til the first day after school is out. This is usually something that the boys will spend time with this summer. New sports equipment or a few new books to read throughout the summer. What ever it is I do try to go overboard and celebrate each year completed in school! So try something special for your kids!