Mixtape acrylic pin

I ordered these pins to honor a friend who passed away and diatributed them at the Celebration of Life. The pin itself is PERFECT…it looked like a perfect miniature cassette tape but the backing to secure the pin doesnt really secure properly. I lost the back to my own pin and several others lost the backs to their pins within hours of my gifting them so that was the only disappointment. If you could figure out a better backing to this pin then it truly would be perfect and I would order again. For now - considering that only issue - I would not reorder this acrylic pin and would opt to try the metal pins next time