DIY Pinhole "Lens" Cap
Replicating the look of the old pinhole box cameras of yester-years on your new digital DSLRs, this DIY project is easy to do. Not meant for serious work but for fun and experimentation. The finished pinhole"lens" require long exposure times thus the need for a steady hand or a tripod and high ISOs.
Here's a simple tutorial on how to make one.
Have Fun!