Ah... inspirations.
I have a story for every single project I've worked on.
Actually, all of them were created because or as a consequence of a weird idea.

The potato game was made just after the gravity game.
It was summer, some years ago, and I wanted to try myself at a new HTML5 game.
I was cooking dinner for my little brother and big sister and talking about what the game could be about.
And, like all brainstorming sessions, we were throwing non-sense ideas until my brother said, while I was pealing potatoes to make French fries, "Why not make a game where you cut potatoes".

I replied positively and everyone was surprised as it was total non-sense.

I started working on the game and I thought of adding a new factor, an enemy!
I was sitting on a bench at univ when that girl, which I liked at the time, passed by. I told her to give me an idea of a "monster-thingy" to add to the game. She said "add a cockroach", and that was it.

The game was built. (It's not a very good game)

If you like this kind of story I can go on and on.
I have more Unix-oriented stories too.