Although project 4 and 5 are finished, I just had to add these 2 pictures. All the other techniques I have shown were techniques I have used before, but this one was a real experiment. My friend and I experimented with using gunpowder to create these results:
Art-a-whirl there was an artist who sold very interesting canvasses. When we talked with her, she told us, that she used gunpowder to create the images. A Google search lead to a YouTube movie which showed a Chinese artist working with gunpowder as well. This was the only information we were able to find, but the idea of experimenting with gunpowder was still on our to do list. No idea where I could get - or better said: if I could get hold of - gunpowder in the Netherlands, but I am in the US at the moment and it is easy to buy here.
To protect the driveway - and have a base to work on - we placed a piece of countertop on the driveway. Taped the fabric and paper on it (it was windy), placed leaves on top of this, sprinkled gunpowder on it, covered it with some cardboard and set it afire. How much gunpowder was needed, was a matter of trial and error. The pictures are from the second and third attempt.
If you want to try out this experiment as well, be careful with it. Make certain that you have open space around you, a bucket of water close by and no children or pets around. Don't know whether I will experiment with this again, although I have to say the results are great :-)