I have owned several EOS cameras. When they were gone, they left me the camera cap.
I used the camera cap to make a pin hole lens.
Step 1: Materials
2. A tin foil - 1"x1" is enough
3. Some tape
Step 2: Make a Hole
Step 3: Seal the Hole
Step 4: Punch the Hole
Step 5: Done
Step 6: A Sample Photo
You need a tripod and set the exposure to "Bulb". It is going to take some trials and errors to get the first picture.
If you can't wait, you may try to use a flash.
The big nut is taken by the pinhole lens with a flash. The camera is set to monochrome.
More pictures are posted at my blog.