Equipment for starting out

Hi, im planning to make my first short film and in need of equipment. I've got a camera, tripod, audio.

I am in need of a point source light though. I would like to film shots of faking golden hour sunlight into an interior location from a window. I know you need quite a powerful light to do so, but I have only a budget of maybe £150 for the light and if I need, a stand of some sort to mount it.

Anyone have any recommendation on what to do?