For sure, one of the most amazing inventions of the Egyptian was the Papyrus. The Papyrus is usually mentioned as the first form of paper that surfaced in History. Considering this, it is from that early advancement made by the Egyptians that now we have what we call paper.
A great advancement of the Egyptians was their Irrigation method as well. They constructed canals of irrigation, and not only that, but also irrigation ditches, to harness Nile river’s yearly flood and bring water to distant fields.
The Egyptians also pretty much invented Surgery, as it can be seen in the he Edwin Smith Papyrus, which describes 48 different surgical cases of injury to different parts of the human body. This same Papyrus is also the earliest document in history that contains a study of the brain. Their surgical instruments included a scalpels, needles, scissors, spoons, hooks, pincers, and many other things.