Yesterday I found a lovely pattern on ravelry for a crocheted necklace that only requires a tiny amount of stash yarn and can be made in a lightening flash. I have a real soft spot for lariat style necklaces, which I think are very flattering.
This pattern was doubly helpful to me because, having learned to crochet a few months ago, I've done little to cement the skills in my memory. I had to find some online instructions as a reminder for one of the stitches.
I made mine in 4ply milk cotton, and the resulting necklace is so lightweight that it is barely there, You could wear it on a hot, summer's day without feeling as though there is anything uncomfortable loitering around your neck.
I've put more details, plus a link to the free pattern, on ravelry, here.