Electrically heated seats, wing mirror defrosters and rear window defroster.
A toaster changes electrical energy to heat.
Electrical energy changes to heat energy.
A resistor.
Electrical energy -> heat energy
This is quite simple with a resistor. That device will turn electricity to heat.
A generator. It uses the heat energy from burning gasoline or a similar fuel.
It is a thermocouple that converts thermal energy into electrical energy through what is called the thermoelectric effect.
thermal/heat energy
A light bulb
Heat and light
It changes from one form into another routinely. Electrical energy changes into mechanical energy (and heat) in an electric motor. Light energy changes into electrical energy (and heat) in a solar cell. Chemical energy (in coal for example) is changed into heat energy (when the coal is burned) which can raise steam under pressure to drive a turbine, converting most of the the heat energy to mechanical energy, which then drives a generator to convert the mechanical energy to electrical energy. Energy is neither created nor destroyed, but changes from one form to another.
Electrical energy changes to heat energy