A short video that show how to reload used disposable cameras and how to do multiple exposures with some models.
This is a Konica disposable camera that you can reload and do multiples exposures. See this little video on youtube that explain it without a word (to be more universal, because I only speaks Portuguese).
With some work you can reload almost any disposable camera. No special tools, no mods, no surgical interventions. All you need is a new film, a little screw driver and a empty disposable camera like the Konica brand (at this time, only Kodak cameras need some modification, that i working on to solve).
PS Do it in a dark room or in a changing bag (remember that films are sensitive to light) So you might need some training with this trick before you try real film in the dark.