Box-Paper Clip-Phone - PROJECTOR!!!!

A shoe box, magnifying glass, paperclip, smartphone, pencil, Stanley knife, and duct tape.

Place your magnifying glass in the middle of one of the narrower ends of the box and trace around the lens.

 Then, cut the hole out with your knife.

Stick the lens into the side of the hole that’s inside the box.

Tape down your magnifying glass. Make sure that it is sealed so that no light can leak in. Tape down any loose sides of the box as well. You can also paint the inside of the box black, optimizing the end result.

 Poke a hole in the back of the box to slide your charger cable through.

 Now take your paperclip and create a stand for your smartphone — it may take you a few attempts to get it just right.

Next, you need to flip the screen on your phone, so it appears upside down.

 “For an iPhone go to Settings > General > Accessibility and turn on Assistive Touch. 

Then touch the floating orb thing that's on your screen and select Device > Rotate Screen. 

For Android, there're apps like Screen Rotation Control and Ultimate Rotation Control that do this for you. While you're fiddling with your phone, turn the screen brightness way up.”

 

Dim the lights, find a big blank spot on your wall, and place your phone on its stand in the box. 

Move the phone back and forth in the box to find the focus...

  

Projector! Now, close the box and enjoy.

Sources: http://www.littlethings.com/box-paperclip-phone-projector/