A shrine for Buddhist meditation
They help the actor eliminate stage fright and help in preparedness.
The first one can be seen either way. For me, I saw a vase first. In all of the pictures, the black drawing is considered the positive space and the white background behind it is considered to be the negative space. If you look at the vase picture again and imagine the background to be the black portion, you see two faces.
Hope this helps! :)
Spiral (From as far as I can see there are no spiral lines)