A couple of designs are something I found online and modified. For the coral reef should I make one big area for everything or should I make a bunch of smaller sections of the reef?

I usually don't make mocs with prints or designs that don't come by default in the Lego Stud.io program, but since this is a special occasion, I decided to do some editing to create duo-colored ball pieces with Electrode and Voltorb's faces! Since it's all a single piece, they can roll around while following your minifigure! They even come in their shiny blue variants!

Anyway, enjoy this small clip of the two using their infamous move: Self-Destruct!