What are the best DIY cables you've heard?

I made some cables per twl's recipe last weekend and they do beat my RG217 cables, by a small, but significant margin.

Since I already had RCA plugs lying around, and PTFE tubing it cost me $4 for the magnet wire. What a bargain.

Thanks for the recipes guys ! Twl .. do you have a good speaker cable recipe ?

Question about this stuff: the only teflon tape I could find is non-adhesive. It's really stretchy and sticks to itself when you stretch it, but it doesn't have any adhesive of its own. I need to keep looking, right? Is this the stuff you've been using?

Have ready to fire: WBT RCA terminators (x8), 25' expandable sheathing, 25' of teflon tubing, heat-shrink to go around, and this questionable teflon tape. All I'm waiting for is the wire (decided to go 32 guage, teflon-insulated silver, on order) and I'm off to the races. All I have yet to iron out is whether to run the signal wire down the center of the tube or wrap it with the ground a la Chris VH design. Anyone tried it both ways?

The non-adhesive PTFE plumbing tape is what I used and because it sticks to itself it worked just fine, and I haven't had any problems with cables unravelling.

And I didn't use any heat shrink tubing, or anything else around the PTFE tape.

However I did cheat and use some double sided tape at intervals along the PTFE tubing in order to help keep the wire in place while I got the tape on. Since the tape is paper it shouldn't affect the sound.

As far as whether to run the wire down the middle or use Chris's design I would say that running it down the middle is:
a) much easier
b) lower inductance (since coils are inductors)

If you do both please let us know how it sounds.