Quoted from IdahoRealtor:Here are two ways to do it:
Sign #1 has a static scene with a rotating scroll behind it creating the motion effect
» YouTube video
I picked up a 1970s wood box with several waterfalls in Motion and sound.
Well the sound is nothing but there is a large acetate reel spread by two wooden dowels on motors,
so the scroll and motion is stunning, better then the original.
adapting it to the same size plastic topper is a bit harder, it doesnt fit in its current structure.
I even picked up smaller ones. So, I know it can be done...either with the skill to rearrange the mechanism, or a larger
Topper. It was my hope to simply place this behind one with the cutout.
Now I need time, and strength.
These are found on Ebay for about $10-$20
ebay.com link: Waterfall Motion and Sound Wall Hanging Light
ebay.com link: FIRST MOUNTAIN Waterfall Motion Framed Desktop Picture with Light Sound