Friend Sandy gave me some rayon yarn about a year ago (maybe longer?). I didn't know what to do with it, then remembered some other friends had made some attractive, slinky scarves with rayon. So I tried a couple of tuck stitches out of the Stitchworld book to see what they would look like. They all looked the same because of the variegated nature of the yarn! The color changes hide the stitches.
So, I just went with one of the patterns, cast on 45 stitches, knit at T 10 for 550 rows. Some of the needles are out of work, creating a lacey effect. Finished size is 7" wide x 7' long. What you can't see is the silky sheen of the yarn. I had to steam it pretty aggressively to uncurl it, but it did cooperate in the end. Very drapey, nice feel to it. I really like it---might have to get some more in different colors.
In case you were wondering, I like to fool around in Photoshop. Not that good at it, but it doesn't take much to entertain me while the blizzard rages outside.