I've always found Tesla Coils to be fascinating and owning a Tesla has made me want to have one. I just found this Kickstarter project which seems very cool, so thought others might be interested too:
tinyTesla: the Little Singing Tesla Coil Anyone Can Build by oneTesla Kickstarter
tinyTesla: the Little Singing Tesla Coil Anyone Can Build by oneTesla Kickstarter