Carl built it with paper clips then used silicon caulk to attach the cups.

Here’s a sparkleball made with Party City color hard plastic cups  in “white.”  The maker, Carl Boro,paired them with warm white LED lights for a soft ivory pearlescence.  Total moon-glow.   Because of the cup’s shape, each half is built in four rings: 14 – 11 – 6 – 1   (64 cups in all.)   To see how Carl does it, check out instructions for the Hard Cup Sparkleball.