I do recommend having students use colored pencils for the coloring pages. They do not break as quickly as crayons and students seem to have more fun with them. I use Crayola's Colored Pencils Classpack and its great. It has 240 colored pencils and it comes in a box that I can store and move them in. I have had it for over 5 years now and I don't see myself replacing it anytime soon.
This year, I decided to store them in colored file folders (separated by topic) in a file crate that the students can easily get to. Whenever students finish an assignment early they are allowed to go to the "Fun Crate" and get a worksheet. I have also allowed them to turn them in for extra credit. It is working out wonderfully!
These mazes, riddles and coloring activities are perfect for homework, classwork, and math stations. I find that they truly keep the students engaged while they are doing something meaningful.
I have created mazes, riddles and coloring pages for many topics and grades. Check them out! If you don't see the topic you need please check my TpT store.