Problem: In order to power-on the MacBook, I had to remove it out of its resting spot, to open its lid which is covering the on/off switch. Not a nice concept, Apple.
Solution: I taped an old PCI slot cover to my MacBook, as shown here: Mounting 1 Mounting 2. The slot cover sticks out far enough, and can easily be bent a little bit (just about 1/4 inch), which presses the button on its other end, inside the MacBook.
Here are some pictures of the full setup: Setup back 1 Setup back 2. Mounting and remounting of the slot cover is a matter of seconds.

