In total, I have made about 20 of these sparkly ornaments, all in different sizes. Not being able to track down the original source, a Google search came up with directions on how to make these decorative balls. The only difference I found in the directions provided by Thrifty Fun and the explanations in the older, previous version was that my steps included:
1) spraying the Styrofoam with acrylic paint (silver or gold being the preferred color for Christmas, ensuring a base of color which will show behind the sequins);
2) after the paint was not quite dry on the Styrofoam, I generously sprinkled silver or translucent glitter on the ball;
3) various sized Styrofoam balls make for a pleasing effect when grouped together
So here are the basic supply needs and further instructions given at the website for making these ornaments. This is from Thrifty Fun. Go there to read step by step instructions and see photographic illustrations for each step in the process.
Here are a few of the sparkling sequin and bead balls which we display each holiday season:
2 1/2 inches foam balls
8 mm sized sequins
3/4 inch sequin pins
Beads with a hole big enough to fit on the pin and small enough that it won't slide past the head of the pin (size 9)
Ribbon, optional for hanging
Remember to individually wrap and carefully store them away, and the balls look fine year after year.