If you're looking for a tool to create printable coloring sheets for your students, ColorBliss is a great option. It's an AI-powered tool that generates custom coloring pages based on text prompts, uploaded photos or simple drawings. It uses advanced algorithms to create unique, detailed outlines that are ready for coloring. You can create custom coloring books with different binding styles and the tool offers different pricing tiers depending on your needs, from personal use to commercial.
Another good option is Dad Can't Draw, which offers a basic but useful service for creating custom coloring pages. The site offers hundreds of printable pages based on subjects like King Kong and Alvin & The Chipmunks. It's a good way to encourage creative exploration and imagination in kids, with flexible subscription plans and a cancel-anytime policy.