I hadn't really considered that. I suppose this is just one of those things that will be worked out with experience.
I'm with Arch on this one. I open with the best card trick in the world, continue with the invisible deck, follow that with the kolossal killer, and finish by covering the deck with a hankie, and throwing it into the air, where the hankie pops open, and instead of a game of 52 pickup, it showers the audience with a cloud of paper butterflies.
(Unfortunately, I have no freakin' clue where I picked up that last one. It was an old book, I think Hugard...)
Not to rain on your pet routine but this guy asked for effects that go along with think stop, not a list of your personal favorite routine. I don't mean to be rude about it but we rarely see beginners with the forethought to ask specific questions (they usually ask "what's the most visual trick in the world" type of generalities) so I feel we owe it to the ones who do think out their questions to keep our answers on topic. Specifically, I think the ID and Kolossal killer, if presented right, would go well with think stop. But vanishing the deck into paper butterflies? How do you justify that with think stop?
@ the OP. It might also help you to think of your underlying premise in your presentation of think stop. For instance, if you are demonstrating a psychic feat then the ID would go well with it. If you are demonstrating a poker players ability to read tells then you might look into the 10 card poker deal as a possible follow up.
p.s. I'm also with Arch on the fact that you don't want a "Cool Down" Stick with the rule of three. Three effects that play well together. You can play around with 1st and 2nd, as in which one goes first the stronger or the weaker effect, but the last effect should always be the most powerful.