50 Student Rewards That Don't Cost a Thing-a great reference sheet for providing reinforcers for an individual, a group, or the whole class! These are wonderful suggestions!
Science for kids, kids science, rainbow jar, make a rainbow in a jar. I would try to get plastic peanut butter jars donated for this.
Science experiment co-op ideas. These are all very cool: 35 Magical Science Experiments. Make crystal words, fireworks in a jar. tons of ideas!
Frederick Jones' theory talks about how motivation is student leadership. Providing students with jobs in the classroom will give them the change to take on the role of a leader.
Free printable blank faces drawing page for kids - good quiz when teaching emotions