Most useless feature:

Once we had to create a Learning Manager System to a small university. One of the (useful) features was a "file system" to people upload, organize and share documents (like a Google Drive prototype). This was the "student portfolio".

However, we had to create a page to act as a "cover" to it, that should allow the student to change the background, add exactly 2 images, and up to 9 "post-its". The image shows the notebook of our client while he was thanking us praising it as the greatest innovation of the decade.

The post-its was kinda nice, but what's the point of those images??

Anyway... On the same meeting of that picture the client asked us to include a "canvas" on that same page, so people could draw whatever they want. The words used was "just like [MS] Paint".

We postponed it, hoping he would forget about it, but on the end of the project he was still asking about it.

I found a lib that did the job and integrated with the project, but I also included a long comment for the next devs saying that I'm sorry they would have to support such thing 😅

The client loved but we never knew anyone that really used that Paint