Black And White Portrait Photography

Photography ideas please?
In my class photos 2, we have a session entitled "A Portrait Without a Face" and I need ideas on what to do. So far, I have fists in front of the camera saying "I love you "through them, someone holding a card in front of the camera that has a quote on this subject, two persons sitting on a bench holding hands (only showing their size down), and tape over the mouth of bodysuits with a sign prohibiting smoking but not cigarettes. Remember, we use film, so the pictures are in black and white. Help please!
DPReview is a challenge just now called "Plan the rear, even portraits "without showing their faces. The fact that http://www.dpreview.com/challenges/Challenge.aspx?ID=2313&View=Results&Rows=25 you use B & W film is very relevant to the question ..