S.E.
You can do a lot with clear glass ornaments that look beautiful. They are inexpensive and they can do several in an hour.
Fill with confetti and/or glitter or other small light weight objects like artificial holly.
Paint inside (rinse each ornament with vinegar set up-side-down on paper towel to get rid of extra. Add a squirt of the cheap acrylic paint of 2-4 colors and swirl around until inside is coated. Metallic paint gives it a glitter effect. Dry upside down on paper towel to get rid of extra paint.) I like this one because if the ornament breaks, the paint holds it together until you can throw it away.
Paint outside. (Use same cheap paints or translucent glass paints)
We also have done paper ornaments - origami (there are loads of patterns on the web Christmas themed from easy to hard) and snow flakes.