In Wales on holiday with my mate, we converted his bike into single speed, and we needed an extra 1mm spacer, but didn't have any! So I cut up a thick cable tie, and wedged it inbetween two of the spacers on the hub, so it was wedged in and let it all lock into place. Was awesome! Lasted for ages! Also, when I used to run a bashplate on my Zona, I had the rubber block from my T-Pro, which wasn't wide enough, so we snapped the lid of my mates lunchbox, and wedged that inbetween. On my bike at the moment, on my Truvativ BB, I was missing a spacer, so I took a lockring off a really old BB, and screwed that on to space it out. Works fine!