This document is a project from Bondary secondary school students about accidental inventions that changed the world. It defines accidental inventions as those that resulted from errors made while working on something else. It then examines several accidental discoveries in detail, including the microwave, super glue, Post-it notes, potato chips, the Slinky toy, Popsicles, dynamite, and penicillin. It analyzes how often these inventions are mentioned online. The conclusion is that while totally random inventions don't exist, accidental discoveries are still important results of scientists pursuing other work and having prepared minds to recognize discoveries from mistakes. The hypothesis that these accidental inventions have benefited society is supported.