Using the build in Turtle library, can achieve some complex and fast graphics.
https://github.com/oonap0oo/Python-and-Turtle
Fractals, calculations and plots using Matplotlib and more
https://github.com/oonap0oo/small-Python-projects
Displaying a vintage LED 7 segment display, for example to put an 80s clock on the screen
https://github.com/oonap0oo/7_segment_display
Matplotlib can create animations
https://github.com/oonap0oo/animation-with-matplotlib
A photo editor using Python, Tkinter, numpy and Pillow:
https://github.com/oonap0oo/python-photo-editor
A function plotter embeds matplotlib graph in tkinter gui:
https://github.com/oonap0oo/python_plotter
"Little Math Wizard" inspired by the "Little Professor" devices made bi TI
https://github.com/oonap0oo/Little-Math-Wizard
This device has a Python coding app which implements a version of MicroPython.
Python code for a Numworks calculator can be found here:
https://github.com/oonap0oo/Numworks-calculator
Also trying some stuff in GNU Octave now and then: