Looking for a fresh technique to use in your everyday analogue life? Why don't you try out using a prism in front of your lens?
According to good ’ole Wikipedia, a prism is "a transparent optical element with flat, polished surfaces that refract light. At least two of the flat surfaces must have an angle between them. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use “prism” usually refers to this type. Some types of optical prism are not in fact in the shape of geometric prisms. Prisms can be made from any material that is transparent to the wavelengths for which they are designed. Typical materials include glass, plastic and fluorite."
For our purposes however, all the info you need for it is where to buy it.It is readily available in most science shops and should be pretty cheap. It looks like this:
Once you have a prism on hand, all you have to do is to put it in front of your lens and go crazy! You’ll get crazy reflections/refractions on your photo that’ll look like multiple exposures. The important things to note are where your light sources are, as it will dictate whether you get light-leaky looking photos or reflections. Here’s a video!