Neds Newt (1997)

Ned is excited to go to xylophone camp, but is dismayed to find out that no one there actually plays the xylophone, and that it's meant to be a camp for all the kids that couldn't get into "fun camps". After seeing that everyone is wasting their time on an electronic toy called the "Battery Drainer" because of its flashy commercial, Ned decides to create his own commercial to get the other kids interested in playing the xylophone.