Only really, really simple ones that I've been meaning to get round to for ages.
First of all is the lock chain which can be found here.
The next one is the real reason I started doing the these pages. Over the weekend I uploaded the TIAS (Tat It And See) and realised that there was little out on the internet about the ZigZag chain. As I'm using this in the TIAS I thought I'd better kick myself into making a page. It's SUCH a simple technique (like the lock chain) that I suppose I didn't feel it was worth the effort of 'paging' it!!! Anyway I have and here's the link to the ZigZag chain.