Maryam Ashkanian is an artist of Iranian decent who I recently discovered through Tumblr. Her 'Sleep Series' is a sculptural collection featuring what appears to be pillows and embroidery. Ashkanian's website features more of her work, and you can follow her on Twitter for updates.
I see it as a reflection of what we're like as we sleep, the impressions we leave in our pillows, the way we unconsciously move through the night, and ultimately a subtle reminder that there's plenty we don't remember/aren't present for throughout our lives.
Note: These lovely photos are definitely not our own and were grabbed from Ashkanian's website