Thanks for the endorsement! I know folks are using batteries, but I keep imagining a car battery on my wife's desk, and that isn't going to fly. Am I misunderstanding?

What appealed about the power source I linked to is that it appears to be fairly small. She's not going to be happy with anything that is large, takes up space, can't be easily moved around on the desk, and has many parts to it.

Take care,
Rich