Off the shelf, just get some Audio Envy.
DIY, some good suggestions here:
http://image99.net/blog/files/d048bbacfce9bcad4a025be804771d9a-76.html
First one top of page here is also recommended, but as noted tricky to make for a novice.
https://www.vhaudio.com/speakercables.html
There's also a school of though re. braiding. For instance, using Duelund hook-up wire, get a run of 12 awg and 16 awg for each leg, then braid all four together using a simple braiding pattern.