I'm giving semester tests today. For algebra 2, I allowed students to have one page of paper to be used for a "cheat sheet" to reference during their test. I collect them from the students when they are finished with the test, mainly so that they don't write things down during the final and then leave and tell their friends what to expect on the test. (I not naive - I know kids go and talk to their friends about the final, but this way they at least don't have a way to write things down.)
If you have never done this before, it's really quite interesting what type of cheat sheets students make without any guidance. (I simply tell them that they can write down whatever they'd like to help them on the final.) Some students have really great reference sheets, others have very little written down, and yet others have nothing to turn in.
Today, I had one student have something very cool written on their cheat sheet. We've talked a lot this semester about Growth Mindset. Here is the cheat sheet:
"YOU CAN DO IT!!" - One good thing from today.