In fits of boredom, I like to work on fiddly little things, like jewelry, and as a knitter/crocheter, most of what I have lying around is yarn. That, when combined with things I find (like washers, office supplies, wire, etc.) gets me these:
These two were both made by wrapping yarn around metal washers. The idea came from a post months ago on either the Craft Magazine Blog or Crafty Pod. They've both brought up the idea at least once. The blue pendant uses variegated yarn, producing that nice effect.
These used bits of wire. The first was a piece of driftwood that had been eaten away by ocean worms. The second is a broken piece of tile. Since I didn't have the material for drilling through the tile, I wrapped it in hemp and secured it with glue.
I just got my ears pierced for the first time, so I have tried out any of these, but I will in another 3 weeks! The first is really easy, just three linked, crocheted circles. They're a bit long and probably impractical for everyday use, but quite pretty. The second has been done a million times, I know, but they were so quick and fun. Again, they're crocheted.
This last pair really has nothing in common. The pushpins were incredibly hard to bend, since I only had a small pair of electronics pliers. It was just an exercise with wire. The ring is some crocheted vintage acrylic yarn. It's a bit girly for me, but cute nonetheless.
That's most of what I have pictures of, but if you want some more ideas, you could always check out the bloggityblog: