Have you ever had a roll of 35mm film that did not turn out well? Now is your chance to use it! (Or take some shots of different textures.) These are great for your Christmas tree or to put anywhere as decoration.
Taking timed exposures with the bulb feature at night with the Holga 120N can be lots of fun!
This tipster is about a technique which I call "High Quantity Multi Exposure" or short HQME. I assume that people have already done something like that before me but I couldn't find any information about it.