March 11, 2008 Swiss car manufacturer Rinspeed made quite the splash at the Geneva Motor Show with its innovative sQuba, a fully functional submersible concept car that cost $1.5 million to build. (Photo by Rinspeed)

Some students have to much time on their hands. These students took some of that extra time and made something very creative out of it. Take a look at some of these hilarious text book drawings.

Women joke around as they pose for photographs in front of a large dragon made of flowers at the Sentosa Flowers festival on January 22, 2012 on Sentosa Island, Singapore. (Photo by Chris McGrath/Getty Images)

Justin Quinnell made a pinhole camera that he uses to take photos from inside his mouth. I know they’ve been floating around the interenet for a long while buy here they are again!

A mechanical horse-dragon made of wood and steel is presented to the public in Nantes, western France on August 26, 2014. This horse-dragon, created by the French artist Francois Delaroziere of “Les Machines de l'île” (The Machines of the Isle), is the hero of the show "Long Ma" which will be presented in Beijing on October 17, 2014 as part of the fiftieth anniversary of the relationship between France and China. (Photo by Jean-Sebastien Evrard/AFP Photo)

A visitor takes a photo of a boulder plastic made of synthetic material called “To be in Limbo” hangs from the ceiling of the 20 meter high Jesuit Church in Vienna, Austria, Tuesday, November 25, 2014. The eight meter high, hollow and 700 kilogram heavy sculpture from the artists group Steinbrener/Dempf and Huber is supposed to symbolize faith and its threatening moments. The installation will remain until April 19, 2015 and then move to a church in Hamburg, Germany. (Photo by Ronald Zak/AP Photo)

Real life doll Alina Kovalevskaya poses for a photograph on May 29, 2014 in Odessa, Ukraine. Alina Kovalevskaya is a walking, talking, breathing living doll on the lookout for her real-life Ken. The 21-year-old is from Odessa, Ukraine – the same city as real-life Barbie Valeria Lukyanova, who has made headlines around the world for her unique look and controversial opinions. The pair were friends, but their relationship has since soured. Alina has made a splash online, with her YouTube videos showing off her doll-like charms attracting hundreds of thousands of views. (Photo by Aleksey Solodunov/Barcroft Media)

In this undated photo made available by journal Nature on January 15, 2014, a northern bald ibis (Geronticus eremita) flies in Tuscany, Italy. A new study released Wednesday, January 15, 2014 says the birds choreograph the flapping of their wings, getting a boost from an updraft of air in the wake of the flapping wings by flying behind the first bird and off to the side. When a flock of birds take advantage of these aerodynamics, they form a V. (Photo by Markus Unsöld/AP Photo)