Great idea for a keepsake. Have each teacher secretly sign "Oh, the Places You'll Go" from Pre-K to High School at the end of each year and give it to your child at graduation. I made this one for a friends new baby with a matching gift tag and instructions.
WE LOVE THIS. It's called a "Calm Down Jar" and it's filled with glitter. Children shake the jar to get their frustrations out and then they’re asked to wait until the glitter has all settled in the bottom. By the time the glitter settles, hopefully so have they. To make, just fill 1/2 of a jar (preferably plastic) with glitter (maybe a color they like) and the rest with water. Screw lid on tight and you're all set!! WE KNOW SOME ADULTS THAT COULD USE THIS!