Sparkleball (no-melt) for the Holidays! : 13 Steps (with Pictures) - Instructables
DIY Sparkle Ball with String Lights and Plastic Cups
Amazon.com : Meric 20-Pack Cat Toy Sparkle Ball Jumbo Pack, Unleash Your Cat's Inner Lion, No More Flabby Tummy, Get Your Kitty Fit Again with These Sparkly Balls, Ideal for Multi-Cat Homes,