I have just got round to trying illusion/shadow knitting. I had thought it would be really complex, but actually it is just knit & purl, with stitch markers (plenty of stitch markers!). A well written pattern helps too!
For a friends baby I made this teddy bear blanket by Woolly Thoughts
It is using sirdar snuggly yarn, which is soft, but most importantly, machine washable! The bear is most visible from the baby's eye view.
bear from above:
bear from an angle:
I had some yarn left, so knitted up a simple baby hat
(with added crochet ears).
And some seamless baby booties
I can't wait to try some other illusion knits. C&C welcome