If you want to snap a photograph of the sun (perhaps during an eclipse) without burning your camera sensor, one quick way is to make a dark filter using an unwanted floppy disk (remember those?). You’ll need to carefully harvest the black magnetic film inside the disk and slice out a piece to cover your lens with. Two words of warning: don’t crease the film, lest you make it unusable, and don’t use the filter with your human eyes.

Floppy Disk Sun Filter [Instructables]