Terrific job with the lights and all the extra work to hollow out the other pieces. Your pictures make it look like two different models. It's amazing what that extra light will do.
FYI, I just installed my MMU on the MK3S and am starting to convert some of my models to MMU versions. The Cheshire Cat is on the Prusa site, so If you do upgrade to MMU be sure to check out my new models.
Thank you, sir. It's remarkable how effective the internal lights are at maximizing the glow-in-the-dark grin when turned on and off. I purposely hollowed out the grinning section to allow light to strike the teeth directly. Your suggestion to electrify your model was truly brilliant.
All the best from a genuine fan of your work!
Teamwork! I love it when a plan comes together.
Might even be a good idea to post your files as a remix, for others to enjoy.
Do not hesitate to PM me if you have any suggestions to modify any of my other models. It's always easier to work with the original CAD files than the generated STL's.