I love the train station flip board (see above). I watch in awe/fascination, awaiting what changes. That’s the idea behind a wine restaurant in San Francisco (rue 47?) that puts discounted (“last/single”) bottles of wine up on the board that you can order during dinner.
Imagine a website (similar to woot.com) that simply refreshed certain lines when the deal was done or had run out. Seems people would just sit there watching the screen constantly refresh … to get in on the next hot deal! The screen would constantly refresh, every 20 or 30 seconds or minute — whatever, 1 line at a time or two. Things maybe have an end time, then all move up the board to the top.
Gimmick idea: The “Last one” — something with quantity of 1 on the site might be discounted greater. “I bought the last one!” the tweet/facebook share would say, and people would feel left out!
Pro tip: These deals could be simply manufactured by you — go and find some coupons out there, like “40% a non-fiction book at Barnes & Noble” coupon and then list Eric Ries’ Lean Startup book with that discount shown. The user clicks on that and is given the coupon code at Barnes & Noble.
I’m going through the past few years of ideas that are in my moleskine notebooks. Some of the ideas are really lacking, but might give you an idea? All of these ideas are yours for the taking. Don’t forget my archive of 100+ web startup ideas.