Imp Bottle is a classic trick for kidsJanuary 3, 2008 M. Horn This is a favorite quick trick with my kids, ages 6 to 14. Now their friends are asking for one! I was happy to find these quirky little magic tricks online and quickly purchased a few for my children's friends. It is an easy trick for 5th and 6th graders to practice and perform. They can easily stump an adult with just a little practice.