I have an outlet that is always on - it’s not wired to a switch. I want to add a lamp module to it to turn on a light in my kid’s room. I don’t want them to have to use an app to turn on the light - is there a switch, or button, or anything that can be added to the wall that will turn on the module? There is an existing switch on the wall so I can expand that to a double switch and give this device power from that too.
Thanks for any suggestions!
Sure, lots of choices for this. 
Pretty much any smartthings – controlled device can be used as a trigger for any other smartthings – controlled device. There are several battery-operated buttons and switches that people put on walls. Or if you want to wire a regular networked switch in you can do that too. The trigger device will talk to the smartthings hub and the smartthings hub will talk to the pocket socket and everything will work fine.
The Cooper 9500 is a battery operated wall switch which looks exactly like a regular wall switch, so some people like that look. But again lots of choices.
That link is perfect, thank you so much!