The material. Some coloring books offer the ability for the child to simply run over the surface with the pens or crayons provided, and it will turn out to be the right color regardless. Some are more like paint books, and some have magic marker surfaces and come with markers that will not show up on any surface but the specially prepared book pages. Choose the book that best suits you and your child. If you are worried about markings on the walls, then don't select a pack of basic crayons, get something that uses special crayons. If you want your child to exercise their own creativity and not have to fit in the lines or color schemes planned, get basic pages. It is up to you.
Nowadays the World Wide Web made simple getting necessary info. And coloring pages reap benefits of the Internet enhancement.
Don't limit what they can offer due to the fact that they don't have many supplies to work with. You can even consider offering them craft supplies such as glue and glitter, cotton, ribbon, and other items that can all become a part of the Spongebob coloring pages they are completing.