Capital One Extendo®
Here's an example of how you can customize the patented Extendo™ to make it truly unique to your brand. Capital One used the Extendo to thank people for attending the 2010 Capital One Bowl which was held in Orlando. When you pull down on the bottom panel, a top panel immediately appears at the top. In this case, it was die-cut in the shape of a finger, which tied in perfectly to Capital One's message.