We cut a hole in a strong plastic plate to use as the palette.
At the easel there were containers of water for cleaning brushes, and a variety of brushes to choose from.
The children were very careful when adding paint to their palettes to think about what new colours they might like to create. Some had a plan in place and knew what two or three colours they needed to make a certain shade (e.g., red and white to make pink). Others wanted to experiment and see what happened if they mixed unlikely colours together (e.g., brown and green).