When the grip on his Canon Rebel T2i finally peeled and warped beyond repair, NYU computer science and mechanical engineering student Rob Huebner decided to go the DIY route. He found a beat up leather shoe, cut the proper shape out of it, and attached the leather graft onto his DSLR using rubber cement.
Image credit: Photograph by Rob Huebner and used with permission
After damaging the pellicle mirror in his Sony A55 with cleaning fluid, a guy named Dario decided to look for a makeshift replacement while waiting for a real replacement mirror to arrive. He then discovered that food wrap (AKA Saran wrap) works nearly as well as a real pellicle mirror. The only downsides are occasionally degraded autofocus and a soft-focus effect when facing bright lights.
Image credits: Photographs by Dario/sonyalpharumors