White Karel T-Shirt: https://www.amazon.com/dp/B07ZDWLWXP
Black Karel T-Shirt: https://www.amazon.com/dp/B07ZDWM793
White Karel Tank Top: https://www.amazon.com/dp/B07ZDWM767
Black Karel Tank Top: https://www.amazon.com/dp/B07ZDWQBCB

Since I discovered that CS106A is no longer using Karel the Robot to teach frosh CS, I created some shirts to commemorate the bot that started it all.
If anyone wants to join me and pay respects to Karel, feel free to get one and wear it for Halloween.