Have you ever wanted to use your smartphone as an enlarger? I can't say that I have but if the ENFOJER smartphone enlarger indiegogo relieves enough funding you may be able to do just that.
Their campaign video is quite enjoyable and I'd recommend watching it just to see the Enfojer in action. It is pretty slick and one of the best designed film photography products I have seen in a very long time. I may be biased because I love piano music.
Find more information about their indiegogo campaign here.
Update: You can print negatives with the ENFOJER.