3M Circles, 2380 Masking Tape Discs, 0.125" Diameter, roll of 2500: Amazon.com: Tools & Home Improvement
Amazon.com: Bigger Round Size Self Adhesive 6 Pack 4 inch Hook Loop Tape Dots with Super Sticky Back Mounting Tape Removable Perfect for Home or Office (4 inch Diameter, Black)
Sticky Situation - Using Tape in the Music Classroom - Make Moments Matter