In my graphic design class last year we were asked to bring in our favorite ad. Oh how I wish I had found this back then. I don't remember exactly, but I believe I found it in a PEOPLE magazine. Talk about interactive advertising. If you aren't sure what Welch's grape juice tastes like, just lift the flap and there is a test strip. It is similar to Listerine strips or other breath freshening strips. The strip looks like a purple piece of paper and it dissolves on your tongue. What a genius idea! Except I haven't seen it anywhere else, so I'm not sure it has really went over that well or if the cost was worth the effort. Keep up the creativity, ad creators!