Paint Sample Storytelling - Students use color names in a story. This requires quite a bit of creativity so it might be difficult for some, but worth a shot!
beginning of the year centers
Playful learning with Lego math games. What a simple and fun way to learn math concepts....could use for adding!
Ha...Loose Tooth Subtraction! Free download
matching numbers... You could use tally marks, ten frames etc too
Mind Map Gallery - CreatingCreativeClasses.Com
Interactive Reading Literature Notebooks ~ Teaching Literary Elements with Common Core Alignment. The creator focuses on grades 6, 7, 8 but I think it can be easily adapted for high school.