Want to print your own flash reflector? Pieroway has free PDF templates that you can use. The templates print double sided, with black printed on one side and faint gray fold lines printed on the other. Print it, cut the shape out, fold along the lines, and attach it to your flash with a rubber band.
If you’re looking for a way to “upgrade” your flash unit without spending money on real gear, the Los Angeles Digital Imaging Group (LADIG) has a nice bounce card cutout you can use to create your own free bounce card. Simply download the template (link to PDF below), print it out on cardstock, follow the instructions for cutting, and attach it to your flash with a rubber band (or velcro if you’re feeling fancy).
Download the Whacky Hack Bounce Card PDF (via Make)
Image credit: Photograph by Adam Flaherty and used with permission