Took me a long time to think of an idea I wasn't completely unhappy with. I eventually thought of an idea for a sort of platforming game set in ancient Egypt. You are exploring a pyramid and the goal is to reach the top, so with every floor the available space becomes smaller.

After basic design of the game, I started with making sprites, trying to make them match the ancient Egypt theme. However, as I have no experience at all in making assets for games, this took me forever... finally, 6 hours since start time, I have one walk animation for the player, and one for an enemy (a snake):