A cute and easy way to do brain breaks. Anytime I think one is necessary in my classroom I would have a student come up and draw from the cup blindly and whichever activity they draw the whole class will do. All these ideas are real simple and provide as a quick break to help refocus my students.
Have a student sit on chair in front of white board and have others write a positive phrase about them, then take a picture. Don't let them see it...till they get the photo! Such a great end of the year activity or for those days when students are using unkind words about one another.
When you say "fist to five check" students rate their understanding by holding up the appropriate number of fingers. The goal is for everyone to be in the green. Great way for students to self-assess their understanding and help you to gauge student understanding.