The next time ribbon is on sale at the craft store, stock up! You can make a lot of pretty things for parties using ribbon. Here are some of my favorite ideas (besides this one, which is just about the easiest idea ever):
Sewn ribbon garland via Chickabug – you can use these across the front of a party table, too!
How to make a ribboned cake stand via Martha Stewart
How to curl ribbon via Glorious Treats
How to make a ribbon wreath via The Crafty Scientist
How to make a ribbon wand via My Frugal Adventures