Great and easy to use no-code tool to make sick looking GUIs using Figma, and connect it to Python,
Using this for some MVP interfaces we are developing- I'd recommend it for anyone looking for speed without compromising GUI looks :)
Me and my team used Tkinter designer for a school project recently, and were super impressed with the quality. Even our school teachers were amazed by what we created with a decades old technology, Tkinter! It still misses some key features, but that could be manually fixed, and is good enough for most projects. Cheers!