Well, she ended up covering the cardboard with duct tape anyway, and I thought that adding the duct tape to the cereal boxes would add enough stability for me, so I went ahead and gave it a shot.
To see how I did it, keep reading.
Then, I simply covered it with duct tape. I did the narrow sides first in a printed tape, then the sides in a solid, overlapping on the front and back just a little bit.
Just as an aside, the box I used was a bit small for most magazines. Keep in mind you may need a pretty large box for some magazines. This will mostly be holding my Readers Digests that my grandmother gifted me.
See you guys tomorrow!