There was this episode of Knitty Gritty
where they took an otherwise average shawl & fancied it up by hooking coordinating silk ribbon strips into it every once in a while...
I liked it, it ended up reminding me of the costumes from Cats
! If you were making a shawl more delicate than the one in the show, I bet you could still incorporate the same idea with either thinner ribbon or bobbles of some other sort?