This teacher did this for a preschool lesson, but it can be adapted for older kids like my fifth graders. They could drop or open the balloons and observe what happens to the solid liquid and gas inside it. This would help identify the properties of solids, liquids and gases.
Six Traits of Writing. These are great mini-posters to display in your classroom. Not only do they give the definition of what great examples of each trait look like in writing, but there are also general guides under each poster to serve as checklists so students can ensure they have everything they need for each trait.