One of the fun techniques you can try with the Holga is that of microclicks. This form of panoramic photography yields stretched, a bit translucent images. The process is about the same as making an endless panorama: shoot a picture, do not advance all the way, shift your view a bit, and shoot again. Keep doing this until you have everything in the picture that you want. The difference is that with microclicks, you only advance a very small amount, two or three “clicks”. When advancing the film in the Holga, you hear or feel some kind of small clicks, like the teeth of a cog wheel. These are the microclicks you use as an indication for how far you advance.
Of course, you can do this trick with other cameras as well, as long as there is no guard agains double exposures and you can advance random distances. The advantage of the Holga is that it clicks audibly.
How many clicks you need to flush exactly depends on your preference. I myself find three a nice amount. With more clicks, it becomes an endless panorama. Nice too, but different. With fewer clicks, the picture can quickly become a but too stuffed.
Keep in mind that a microclick picture produces an overexposed picture, so 800 iso film may not be the best choice. Redscale works well, since it’s almost impossible to overexpose. Or black and white, that usually can take some extra light as well. Still, at first it will probably take some trial and error how many layers you can shoot for a good picture. I have obtained wonderful results, but also blurry blobs. Either way, it’s fun to play with. At best, you have beautiful, etheral landscapes. Or buildings that look like they are vibrating. The distinctive darkening strips on the side of the image give the picture a little extra depth. A little bit like looking through a tunnel, or going very fast in an old science fiction movie.