Wanna be the scariest house on the block this year?
"COVID Jack Spiralized" is designed to be printed with translucent filament in spiralized mode. The stem is 20mm in diameter, so puncture your pumpkin with a tube with 3/4" outside diameter and you'll get a nice, snug fit.
You'll get best results using a bright light through a hole in the back.
"COVID Jack Solid" is for printing solid and simply sticking into the pumpkin. Don't expect this version to transmit as much light.