There are none that are 100% effective or that look good. Banachek talks about the top thought of cards and I suspect there is a lot of lists you can find through some research. If you focus on those cards, you could develop something with multiple outs using the invisible deck as the last out. There are a number of routines which use equivoque, but the method fails based on the number of choices that have to be made. My recommendations to use equivoque with an index.
With that, I want to comment. on your question. Why does it matter to the spectator? What is the difference in their memory (and the memory of those watching) if they pick a card and then, at the critical point in the routine are asked to "think" of the card? Remember, we aren't supposed to be doing real magic, just presenting the illusion of real magic.