Light bulb plug adapters for pc grow box...

Was wondering where i can buy the light bulb plug adapters which allow you to screw a light bulb into its socket and then plug it into a wall outlet....i found a thread on here about it a while back but now i cant find it for the life of me. Home depot is too expensive IMO. THANKS

I saw them at walmart before. But I had just tried to get more, but couldnt find them anymore

I found some at Lowe's. They're not that pricey, really.

ace hardware. just about any hardware store should have them. look in the electrical / lighting section.