When we were in college, we wanted to build something we dubbed the anti-peephole lens. See, you’d position it on top of the peephole outside your pal’s door, enabling you to see inside. Just imagine the practical jokes!

We have no idea if the anti-peephole is possible, but if you know, please email us!

In the meantime, here’s a peephole-related project that gives you a wide-angle lens for your digital camera.

Wide-angle lenses are really fun, but they can cost hundreds (assuming you can even get one for your camera.) This project is super simple and only sets you back $11!

DIY Wide-Angle Lens
www.instructables.com/id/EYY1F7X6PCEP287S4U/?ALLSTEPS
[via reader Tracy Cristal]

See also… A little more geeky, and a lot more detail.

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2. Make a DIY Fisheye Lens from a Peephole and Soda Can It’s ugly, green, and it’ll make people stare at you. And that’s why we love it. Our pal Bhautik is no stranger to camera hacking,...
3. Printable, Foldable, DIY Lens Hoods, Fitted For Your Lens. Free! Paul Mutton doesn’t want you to spend twenty bucks on buying a useful, but painfully simple, piece of black plastic. Lens hoods, those round plastic...
4. The DIY Fisheye Lens — Using Nothin’ But a Pair of Old Glasses and Some Tape We’ve always wanted to live in a fish tank. There – we said it! So we have odd ambitions. At least with the DIY Fisheye...
5. Instant Photos are Back! Presenting the Fuji Instax 210 Wide Format Instant Camera Extra photos for bloggers: 1, 2, 3 Movie rentals that suddenly appear in your mailbox and cheese pizzas that show up at your door with...

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