K'Nex rock my world. About 6 years back, when I turned 18, I finally ordered the 'back of the catalogue' 3000+ piece Big Ball Factory set on eBay, after spendi

K'Nex rock my world. About 6 years back, when I turned 18, I finally ordered the 'back of the catalogue' 3000+ piece Big Ball Factory set on eBay, after spending hours imagining how cool it would be to have it back when I was little. It was awesome. My mates and I still build it occasionally.