What is the best invention tht appeals u till date

Electricity is the best and useful invention according to me. :)

I think the electric bulb is the invention that appeals to me.

Apart from electricity which is the basic requirement for almost every human activity, computer is the most appealing invention. We would not be interacting on Boddunan but for invention of computer.

There have been several inventions and the most recent one cell phone has truly revolutionized our lives!

@Chinmoy,
As you said cell phones have become part and parcel of our lives. :) :)

I find it to be potent tool for the economically disadvantaged sections of our society!