In this one-page PDF, novelist Cat Bodhi explains the art of “treehouse knitting” — creating hammocks that are knitted around the high branches of strong trees:
First find a tree with two strong, relatively horizontal limbs within four or five feet of each other. Cast on to one limb by wrapping it in rope (I prefer 3/16” nylon), then use a long circular needle to knit the first row of loops. (Since your local yarn store doesn’t carry ten-foot long circular needles in a two- inch diameter, try the hardware store. Buy a length of plastic tubing, carve a set of needle ends out of 2” dowel, and use duct tape to smoothly attach them.)
(via Making Light)