I found this great photo picture wall over at HGTV. It is done with magnetic paint which you can find all over the internet as well as at Home Depot and Lowes. You can also do it with the Post-it picture paper. It has the same sticky as post-it notes and works great. Then when done peel off and change. Would work great on stainless steel refrigerators, as well as a boring door -- or any wall you want to dress up.