This was derived from the Sphere thing which I'd designed. Designed a LED holder to attach 2x LED to a CR2016 button battery. Have fun!Print using clear or translucent PLA. Print out: 2x Sphere.stl 1x Sphere_int_LED_V2.stl You'll also need: 2x LED (trim the LED leads to about 10mm, keep one shorter to indicate the negative polarity) 1x CR2016 button battery Use the "+" and "-" sign on the Sphere_int_LED_V2.stl for assembling the parts correctly. There are 4x grooves for the LED leads, use a pair for each LED. For storage purpose, remove and place each LED into the "+" and "-" sign. The battery can be left in it's compartment :) Cheers!