Does anyone know where I can get some good large strong magnets in Wellington? We're temporarily setting a van up as a camper for a couple of days and I thought that would be the easiest way to temporarily attach some curtains on the inside.  I had a couple of big magnets I pulled out of a hard drive that will work perfectly, but all the standard rare earth strong magnets are usually only 8-12mm wide discs (I've got some, and they're not really up to the task).

I suppose I could see whether I have any more drives around to recycle, but thought I should check here first to see if anyone had any ideas.