- Eisenhower Box (Credit to)
The Eisenhower Box is a famous productivity strategy tool used by Dwight Eisenhower. He was known as a very productive people. He served as the US President, a five-star general in the US army, served as the Supreme Commander of the Allied Forces in Europe during World War II, served as President of Columbia University, became the first Supreme Commander of NATO, and somehow found time to pursue hobbies like golfing and oil painting.
The tool (image below) was prepared in a spreadsheet (Excel file). Download link below the image.