Actually, trying bananas to add their nutrients to some cuttings I'm rooting. Knowing that the peels are good for roses, a bit of googling led me to a Jerry Baker site (remember him from 70's TV?). So ....
I set up a mini terrarium in a candle jar, placing a junk of over-ripe banana between the layer of sphagnum and the soil, then inserted a couple of carnosa cuttings (with just the little root bumps) from a vine I had accidentally broken. It is now atop my fridge at about 74-75F and seven feet from a southeast window.
I'll post on progress, and if I ever master adding pix with Windows 8, I'll add those, too. Wish me luck with both!