That’s all there is to it. I tested the setup with the single battery and it went for weeks at a time. You can also paint over the LED to give it a little more vibe. Some of the battery compartments are a little fiddly and need to be really squeezed to make all the connections happen. I use a little hot-glue or bits of sprue to help when necessary. Enjoy!
Here’s a link to a 20 pack of those CR2032 battery housings with the switches and leads already attached:
Here is the LED chip light pack: