Which tool will I have to use to convert mechanichal energy to electrical in my science-model?

I've to make a working model of science in which I rotate an axle around a wheel, & the kinetic energy produced gets converted into electrical energy, & a bulb is lightened by it.
But I don't know which tools I'll have to use which can convert the mechanism into electricity.
I need information about the tools needed for it. Are those tools easily available in nearby stores?
I need help. I've got one or two weeks for it.