A random test I saw on reddit.
Develop a Backend + Front-end solution that allows your user to annotate a blob of text [...]
Allow the selection of a single token, at once [...]
The page may have multiple selected tokens. A token can be deselected [...]
When the user selects a word that starts with a vowel it gets associated the tag 'Baky'; all other tokens get associated with the tag 'Kola'. Display them differently in the UI.
So, it took me 2h 22m to finish Task 1. Then, I decided to take a better approach by reconsidering what token position really is, and it took a while to rewrite the code. Task 2 was finished at 3h 24m mark, and Task 3 was finished at 3h 40m mark. Not terrible.