No, it is not possible to light up a bulb without any connection to a power source. A bulb requires electricity to produce light, and without a power source, there is no way to supply the necessary electrical energy.
In order to illuminate a light bulb, you typically need to connect it to a power source such as a battery, an electrical outlet, or some other form of electricity generation or storage. The electrical energy is then converted into light and heat through the bulb's filament or other lighting mechanism.
There have been various attempts to develop alternative methods of powering light bulbs, such as using solar energy, kinetic energy, or other renewable sources. However, these methods still require a power source of some kind, even if it's not directly connected to the electrical grid.