Hey, here are some super easy ornaments I made a couple of weeks ago (I only just got round to adding the ribbons today, ha!).
All you need is beads in whatever size, colour or shape you fancy, wire that is thin enough to go through your beads and some ribbon.
Put beads on your wire, "tie" the ends together, but leave a bit of wire so you can make a loop. Shape your beady wire into the shape you want. Attach ribbon; I made a bow at the bottom of the loop and then attached another bit of ribbon at the top for hanging on the tree.
Told you it was easy. ;-) There are some more beady hearts in this Flickr set.