Create a mural using the climate stripes (or perhaps oceans) as a theme. This could be created using waste materials; be a focus for a lesson about abstract art; could be used for learning about colour theory; created by weaving or other techniques.
Climate change display
Using the statements for change, create a large display in a prominent/common area in the school to raise awareness.
Make it happen!
Work with your student council/school leadership to fully implement at least one of the pledges for action.
Create an environmental area in your school and see how much wildlife can be attracted. There are some useful resources on the Young People's Trust for the Environment website.