Dream Jars. these could be just a nice activity when discussing hopes and dreams, it could be something you use during discussions of the future or a nice little activity to go with the story of the BFG.
Never mind what is. Imagine it the way you want it to be so that your vibration is a match to your desire. When your vibration is a match to your desire, all things in your experience will gravitate to meet that match every time. -Abraham Hicks