I think I've bemoaned this fact before - New Zealand is a country of 4 million people (and happily, 3 million of those live on the OTHER island from me) and 44 million sheep... yet we are poorly served for woollen yarns compared to overseas. Also for knitting related accessories.
One gem I haven't seen here, but is now My Preciousssss is a set of Denise interchangeable needles. Not cheap, but essentially just about every size of knitting needle you could want in one kit. Use 'em straight, use 'em circular....they just snap together in an ingenious way. They also act as cable needles and stitch holders.
I bought them in order to make Moebius scarves. Remember the Moebius strips you made at school? The things with the twist which really only have 1 side? Well, Cat Bordhi has invented a way to knit them in one piece (ie without just knitting a rectangle and joining the ends with a twist.
Here's a partly completed one, made with 70% merino wool which is sooooooo soft - I can't wait to finish it.