Since I found out that my original pinhole was too big, I have been going around with aluminium foil (pierced with a small hole) covering my body cap. Not the best. And certainly not the best since in bright sunlight, the light gets reflected off of the alumin(i)um and just basically produces reflections with little to see in terms of actual picture. Another problem with aluminium foil is that it is malleable and the hole changed shape over time. Not terribly important but again maybe it is, i just don't know it yet. All of this got me thinking that I would need some other material for my pinhole. Last night I was at a friend's place. He was showing me and my wife how to develop film. I was in luck! Once the emulsion is removed from the rest of the film remains a plastic-y black paper. This paper is not very malleable and would not significantly reflect light and is also very resistant to tear, a lot more so than alumin(i)um. I had serendipitously found my perfect material!
I haven't had a chance to test it yet but will promptly do so on my return home tonight!