Einstein did a lot more than this. (Explanation for brownian motion, some models for crystals, photoelectric effect explanation, etc.)but relativity is only useful in solar pannels and nuclear energy. That's a lot, but not as much as the everyday applications of quantum mechanics (computers, electronics, quantum chemistry, laser, MRI... etc...). IMHO, we owe a lot more to Heisenberg and Bohr than Einstein.
The photoelectric effect is important in Quantum mechanics development, and relativity also has uses in GPS, and nuclear weapons have and a big effect on how the world went during the cold war.
(Though this does bring up an issue with most of these "important people", all accomplishments were built on something else someone did, which can be hard ot separate.)