Rhoda is at 1:10 scale in this and the previous page, making her six inches tall (15.24cm). The "ceiling" of the DVD structure is 5.25 inches.

I actually made that structure of DVDs in real life for reference. I didn't try to make the DVD cases in the comic match, but I used a box set of The Lord of The Rings, the Game of The Year edition of The Elder Scrolls IV: Oblivion, and a box set of Parks and Recreation (which I haven't watched yet, but someone did borrow it from me once, so it's been watched by someone).

One idea I had for the obstacle course that wound up not getting used would have involved a ball. That ball would've been kept stationary on something, and Rhoda would have shrunk whatever that something was from a distance. That would've made the ball fall and become a roaming obstacle.

I think this was a neat idea, but staging it would have been difficult, and might have added another full page or two to the sequence. It also would've established that Rhoda can do something like that from a very far range (proportionately) while running without it taking a lot out of her, and I decided that wasn't something I wanted. The idea got cut for two reasons, each one of which would have been enough reason on its own.

Still, I do think it was a neat idea.