[shtack]

I have a lot of examples but a funny one that comes to mind is: in the early 2000s when IM clients were all the rage, I wrote a VB6 application to go through my MSN Messenger logs and rank my friends by how much I talk to them. Kind of like a MySpace top 10 prior to MySpace.

I spent a decent amount of time tweaking the UI, improving performance, adding filters, providing different file output formats, etc. Never shared it with anyone.