Oil on canvas.
A painting of a naked, flayed person in the style of The Vitruvian Man by Leonardo di Vinci - but with their eyes closed, grimacing, and with full colour and detail.
Or - Someone naked, and uncomfortable at their desk in a large open plan office.
Or - A canvas spilt into four equal parts: a scene of people praying in church, one of people walking through a winter scene, a flayed naked person, and, finally, a painting of someone asleep in bed, a representation of their dream on their forehead.