Only the U.S. has Solo plastic cups, so the rest of the world has to work with other shapes and sizes. It takes a lot more non-solo cups to form a sphere, even when you’re building with smaller cups. It’s also harder to get these “any cup” balls nice and round. Our Any Cup How-to shows one way to do it. But you can find some pretty cool sparkle ball videos on youtube from other countries. I highly recommend the video below by Italian Walter Calabrese. I tried his method. and it works really well. (See result here.) When I finally make a styrofoam “bubble lamp,” this is the method I’ll use except with hotglue.
note: blue and white sparkleball above by Walter Calabrese.
Walter Calabrese, Italy (English version) /youtube (Italian version here)
DIYCORE, Brazil (sparkleball starts at 6:53)/youtube
Jérémy Prince, France/youtube