Several months ago I posted an Instructable about making a simple sun filter with a black marker and a sheet protector. That approach, although it did block out most of the light, didn't work very well and threw everything out of focus. This one, using a floppy disk and some card stock, works much better and doesn't take anywhere near as long to make. There's also slightly less of a pink color, though part of the blue component of the color seems to be from UV that makes it through the filter. The effect seems to go away when used with a telescope for some reason. Instead, the disk filters the light to a more realistic orange.
Step 1: Supplies
You'll need a camera with optical zoom (this is important, you'll be using the lens barrel to keep the filter attached) a floppy disk, some thick paper, glue, scissors, and tape might be helpful in assembling the mount.
I'm also using an old computer as a surface. You can use any old computer you might have laying around, or you can just use a normal table.
Step 2: Open the disk
This is probably one of the harder steps. You'll need to rip open the disk, but be careful not to crease the black magnetic film because we'll be using that. Pop out the metal wheel and throw everything away except the film. You could also reuse the parts for something else, but recycling is not the goal of this ible.
Somehow this photo ended up upside-down even though it looks fine in Photoshop.