Here lies the small fun things I worked on, and available under this website. I hope at least a few people find it fun and/or useful.
If you are someone who is having difficulty understanding regular expressions and finite automata, this interactive playground will help you visualize how regular expressions are compiled into different types of automata.
If you are someone who is having a hard time with bitwise operations, or someone who have no idea about them, this interactive playground will help you!