I built a fairly simple database and website to showcase school curriculum “reader” books searchable and sortable by levels of difficulty and other metadata. I didn’t think much of it when I was building it but apparently it won the company a few million bucks in revenues once it launched. The big wigs rewarded that by selecting me as one of a few folks that got to go to a big corporate retreat in the Bahamas. This was before the company management went to crap and stopped incentivizing innovations at the employee level.