On the assembly video, it appears that the white on/off switch actuator is captive to the side panel. In my package, the white switch was just loose in the parts bag. And I see no way to secure it to the cabinet. Am I missing something obvious?

Hi Dwaine,

If it's an acrylic cabinet, the switch should be pre-installed. It may have been damaged in shipping or incorrectly made. If that's the case, send an email to info@tinycircuits.com with your info/address. If it's a wood cabinet, the switch would not be installed, but should be a good press fit with a clip that holds it in place.

Thanks,
Ben

Thanks Ben! Email sent.

Got the new switch. It works great. Thanks!

I got the wood enclosure. 
After reading this post I'm confused.
There was nothing in the package for the power switch.
Just use a paperclip?