Mother's Day at my house this year, so I made this little banner to spruce it up. Triangles cut from vellum paper, paper punched, and strung between two paper balls. Just don't use paint on vellum, I've done it before and it curls up like the legs of the wicked witch of the east post-house scrunching. Markers work just fine, though!

This is a great way to liven up a party space quickly and easily- I've used this method many-a-time.  It would be great for weddings, too, with the ethereal and romantic feel of the translucent vellum.