I got some......
1.Card spring, Josh is right. This is the most classic flourish ,but people react to it the most.
2.Vertigo, This is one of those flourishes that looks way harder than it really is!! Use that to your advantage.
3Thumb propulsion, Trust me laymen love aerials!! it shows a lot of skill, because it seems impossible to laymen since cards are so thin.
4.Armspreads, I'm sorry this is XCM ,but laymen react to it a lot. Again, this is another flourish that looks way harder than it really is. If you end it with a nice aerial catch people would love it.
5.Jackson 5, Everybody loves the syblism and Leno cut part. It may be hard to learn but it is worth it.
6.Bumble bee by Garry A, Search it up and learn it on you tube!! You would be happy you did. It takes a while to develop speed ,but when you do the laymen would love it.
7.The Stag, This is another one you can learn on you tube!! it is really hard to learn but the Laymen love the Areal part.
8.Eye display, displays are good ,because many laymen never thought it is possible to hold up more than 4 packets of cards to make a nice looking design.
You need to get the best of both worlds to get good reactions from the audience. Learn some XCM. XCM is good because the moves were created to look impossible and artistic. The only bad thing is you might have to invest in fanning powder.
If you do not feel like investing on an XCM DVD right away you can use this link to get started on some XCM
http://www.LangFlourishing.com.