Create extreme urgency.
On your sales page, after the headline, show a floating countdown timer with the price. The price is heavily discounted and goes up very quickly (5–15 minutes?) until reaching the full price. The timer shows how much time until the next higher price is set. This floating overlay follows the buyer as he scrolls and reads through your sales letter. The timer does not have to be the same for each step nor does the price increase, but the buyer can see what the next price will be. For instance, the first or last timers can be longer. You can also have a final timer after reaching the full price, where you give the buyer some extra time to buy it full price but also get a bonus. You might want to use this tool only on the second visit of the customer.
You are reading a book and would like to discuss something in it with others.
An ebook reader feature that allows me to see if any others are also reading this book right now (and also filter those who have read the part I am on), and enables me to communicate with them regarding the particular part I’m reading.
It would be useful to find out how and when can house brands be more expensive than big brands.
A series of experiments designed to test is house brands can be more expensive, and discover the formula of how and when it can be done.
You sent an email to your subscriber (as part of an automated sequence), and he still didn’t open it. Get him to open it next time he’s active online.
Show him a reminder with a teaser about what’s in the email you sent him. Either use a dynamic retargeting ad on the web or even a dynamic pop-up on your site.
Learn and have fun.
An augmented reality app. When you see something while walking that you think is interesting, or you know an interesting fact about it, maybe you discovered something, etc., you just launch the app, point the camera at the object and annotate it with your insight. You can also check and see what others have contributed regarding this object or other objects around you (buildings, signs, flowers, etc.)