We've long recommended Polaroids for dabbling in naughty photo shoots with a trusted loved one. The soft focus blurs imperfections. Waiting for the results is a great tease, adding sexual tension of the shoot. There are no negatives or digital files to worry about getting in the wrong hands. And the pix just look cool, with their thick white border and simple, old-school quality. 

Polaroid instant cams are a great introductory sex toy for couples: pass it back and forth; leave a little to the imagination or aim below the neck if you're shy; ritualistically burn the ones you hate and hide the ones you love in a lock box to enjoy later, when you'll be able to finally appreciate the body that bums you out now; spontaneously pop a naughty image in your partner's brief- or suitcase before they leave for the day for a nice surprise.