The world is filled with happy little accidents. Some of your favorite things might not have been created on purpose. Or, they were created with a different purpose in mind. Artists, inventors, scientists, and chefs can all attest to making creations that they hadn’t quite intended to make.

These fan favorites might never have come to be if it weren’t for a lack of chocolate. A baker, Ruth Wakefield, ran out of chocolate while trying to make cookies. She broke the sweetened chocolate into small pieces and threw them in the dough.

Jason Vorhees is one of the most famous horror movie characters of all time. In the Friday the 13th films, he wears a ski mask to disguise his face. This was actually to save the film makeup team time. It’s much faster to throw a mask on than it is to sit in the makeup chair for hours!

Nachos were another happy little accident in the kitchen. The maître d’ at a restaurant in Mexico had to quickly whip something up for 10 military wives who had crossed the border from an Army base.

Marvel fans know The Hulk for his unmistakable green skin, anger issues, and enormous muscles. The Hulk was actually supposed to be gray! Can you imagine? We’re not sure a gray Hulk would be nearly as exciting to watch on-screen.

Waffle Cones were born out of necessity. Two vendors were next to each other at a World’s Fair: One selling ice cream and one selling waffle-like pastries. When the ice cream vendor ran out of cups he had to think fast.

When a young chef burned a burger, he needed a way to hide the charred spots. Easiest solution? Slap a piece of cheese right on top. Now, you have a fairly delicious cover job.

We all have an 11-year-old boy to thank for this summer treat. Little Frank Epperson was trying to make his own soda by stirring a cup of powdered soda with a stirring stick. When he left it outside overnight, it froze.

Amazingly, scientific discoveries can happen by accident as well. Sir Alexander Fleming was attempting to make a kind of “wonder drug” that would cure many diseases. He actually threw his experiments away when he felt like they weren’t working.

Potato chips were accidentally created to please a grumpy customer. A customer at a restaurant in Saratoga Springs kept sending his plate back, requesting that his potatoes be thinner and more fried.

Spencer Silver was attempting to create an extremely strong adhesive, but ended up making something much weaker. He couldn’t seem to find a reasonable use for this adhesive because other adhesives at the time were stronger than his creation.

We all have a French monk named Dom Pierre Perignon to thank for our bottles of bubbly. The monks of Champagne had access to all the best grapes, but in the winter months, the wine fermentation process would freeze. When it warmed up in the spring, the wine would have carbonation.

It’s crazy to think that one of the most popular children’s toys of all time almost didn’t exist. This moldable clay was originally supposed to be a wall cleaner, but it didn’t work all that well. Parents started letting their kids play with it to mold little creations.

Richard Jones was a naval engineer who set out to make tension springs for battle ships. What he ended up with was perhaps less important, but a lot more fun. Have you ever tried sending a slinky down the stairs?

In 1826, John Walker experienced a lucky accident that resulted in the birth of the match stick, something we all still use today. He was a chemist and pharmacist who was simply using a wooden stick to stir some chemicals.