How to Color and Shade Drawings Without Using Copic Markers?

[ToxiFoxy]

Basically the title, I would love to get a set of copic markers but they are really expensive so I was wondering what else could you use that also shows shading. Thanks!

 

[Mega_Cabbage]

Pretty much every media. Pencils, colored pencils, charcoal, paint, watercolor, pastels, and etc.