Based on your query, it seems like you're interested in generating drawings. The best tool for this purpose from the given options is Midjourney. This AI-powered tool specializes in generating images from text descriptions, which could be a great asset for creating visual aids or illustrations for your teaching materials.

Key features of Midjourney that could be particularly useful include:

• Text-to-Image Generation: This feature allows you to create custom visual aids by simply providing a text description. This could be a great way to create diagrams or illustrations that are tailored to your specific teaching needs.
• Style Transfer: This feature allows you to adopt the style of one image into another. This could be useful for demonstrating different art styles to your students or creating consistent visuals for your lessons.
• Image Upscaling: This feature enhances the quality of lower-resolution images. This could be useful for creating high-quality educational materials or presentations.

Please note that Midjourney operates exclusively on Discord, so you would need to be familiar with this platform to use the tool. Additionally, there may be a learning curve as you get used to the text-based commands and controls for fine-tuning your images. However, once you get the hang of it, Midjourney could be a powerful tool for enhancing your teaching materials with custom visuals.