This project will draw a spiral. Press space to start. Type the size you want your spiral to be. It will make that size spiral. It will let you see it for 5 seconds. Press c to clear. Press space again to draw another spiral. Enjoy. P.S. No this is not part of a project I'm going to make in the future. The maximum size is 400. If you don't think 5 seconds is enough, please say so in the comments.
Thanks to @griffpatch_tutor for the Custom Blocks tutorial.