If people did not have to work, what would motivate them to work?
If you take a look at games like minecraft, they have quite a lot of players who do not work (students, college students, etc). These people first mine thousands of blocks, then rearrange them in a creative way. There's absolutely no need to do so, it is entirely voluntary, yet people end up moving hundreds of thousands of blocks to do something creative or to fulfill their design.

Players of minecraft explore the game environment, make tools, extract raw resources and ultimately make virtual structures like in the image below.


Statistically speaking, minecraft has more players(11 million paid users) and instructional videos(with millions of views) on YouTube than any other game I know of.

From this, it appears that in a world without need to work, creativity, design and "market of 1 person" would motivate people to do something. Cleaning toilets is not such thing. Maybe painting toilets, or designing them is.