Cool designs for cables. Interconnects, mains speaker cable

Hi everybody !!!
After reading some posts here about DIY cables I remembered a few cool links for making DIY cables.
Check out these links for interconnects :
Theory and opinions
and DIY
the X-series and a cool mains cable
I hope these are interesting. I am thinking of making a few just for fun. Have fun reading.
I would like some opinions and ideas on these.
Ilias Kamouzis