We did this in our main level bathroom, using Velcro tabs. I also bought 2 18qt dishpans at Dollar General to keep the "inside" orderly. *Note: Careful applying pressure to door. Ours broke off - wood glue to the rescue. Love DIY projects!
Buy the Wood magazine organizers from Ikea Mail station made of magazine holders. I've found, if you have a little patience, you can use cereal boxes to make your own magazine holders. Cut to desired size and decoupage with a 50/50 glue and water solution. 2 -3 layers makes it quite strong. I use paper grocery bags or used copy paper for decoupaging. Once completely dry, stain or paint.