About this 3D model

This object was made in Tinkercad. https://www.tinkercad.com/things/kPxzSn2JLAR Here is a video of it 'bubbling'. https://www.youtube.com/watch?v=mTC2JURFe7k Phew! This was my biggest 3D printing project ever! But wow! It's soooo cool! This is for entry into the Trick or Treat contest, and I guess it's a 'trick' cause it 'bubbles', but what a treat to watch a 3D printed item bubble! WEEEE! This was my own idea and my own design. I have never seen anything designed to bubble with the method I came up with, (after trial and error, and error, and error...maybe one more error.). Now, LOOK AT IT GO! What you need; 1. A toy motor (20mmx30mm from case to case) shaft can vary. I got one from a 1980's toy car and a 2016 toy car, EXACTLY THE SAME THING! 2. An on/off button switch with a base/shaft of 15mm diameter to fit into the cauldron. 3. Some small wires, such as 22gauge 4. 2 lengths of 14gauge solid copper wire, about 40-50mm long each. 5. 2 AA batteries. 6. 3, #4 x1/2" sheet metal screws or equivalent. The logs house the AA batteries and you will be making the copper connections from the 14gauge wire by hammering them on an anvil or something hard. Watch my video in making a terminal block to see how I do it. https://www.myminifactory.com/object/3233 The batteries go in the SAME direction! It's only running on 1.5VDC, but it's double amperage so I suspect it should last a while. Other than that, if you have any questions, feel free to ask.