I teach at a large technical school, and the instructors are encouraged to dress-up the classrooms. My students are happy as long as they aren't bored, so I try to keep them entertained during lecture. My course is Advanced Diagnostic Systems, and we have two large cans hanging from the ceiling about 8 ft. apart. They are connected by a string which has a sign attached "CAN NETWORKING". We do cover controller area networks, and the students get a laugh when they notice it.I also use posters that relate to the automotive industry to brighten up the room. Doug Ramsey Instructor UTI, Avondale