Many people enjoy creating very sophisticated pictures with Desmos graphs.
It is simple to restrict the domain for example which gives a great deal of scope for creating images you want.
See Alec Schultz’s PacMan for example.
Desmos have a whole gallery to inspire you! You can of course get very sophisticated. Look at this lovely evening by Petr Feidler! Note the use of inequalities for shading and the slider!
on the other hand in case it’s raining – you’ll need an umbrella!