This is a great (and cheap!) way add great color effects to your photos
Step 1: The Materials
1. clear plastic bags (pictured below)
2. Permanent Markers
3. A camera (of course)
Step 2: Making the Filters
Take your markers and color in a big area on your plastic bags. Then let them dry (this should not take long).
I have only used red, blue, and black(black doesn't work, the flash didn't shine through).
Please let me know if you find any other colors that work well, I will add to this if I do.
Step 3: How to Use Them (Like I Do)
Note: Make sure that the part that you colored on is facing inward so that the color does not smear on your camera, even though the color should be dried by this point.