The first Hackathon that I attended was PickHacks. In this Hackathon my group and I created Pickaxe Protection! This is a web app that helps students find lost items. If a pair of AirPods where lost, then someone could report it on the app. The person who lost the AirPods could see where they where found, and claim them.
New Technologies were learned, this was the first time I had used React, and Pickaxe Protection was born. There was a lot of trial and error, but in the end we finished, and it dosn't work half bad!