Just go to your local hardware store and ask for . . .

One of those adapter thingies that screws into a light socket, and has two electric outlets and still has a socket for the bulb.

Use this exact phrase and you'll be fine.

Here's a link to Rona too.

http://www.rona.ca/en/plug-base-socket

Any good hardware store should have them. A lamp light fixture outlet is the name I believe. I have several in use at my home.

They don't design such adaptor for lamps because of liability for causing fire

I want an adapter where you can screw it in where a light bulb would go and it would give me an socket which I can plug something in but still have an place for the light bulb. Can you tell me what its called and give me a link. thanks