Restriction: You can only use water as your medium today.
It turns out that working with water’s surface tension is extremely interesting. I think this was my favorite so far of the short projects, and I’ll certainly return to this general idea…
A bit wider shot of the experiment in progress.
Although I did not get a shot of it, the “water spots” left behind did dry in exactly the same shape, so this could be an interesting way to do almost-invisible graffiti. As long as it’s on something that’s indoors. And doesn’t move. And dark.