If I know I'll be showing just a couple tricks, I'll tell them that I'm warming up my hands by telling them to peek at a card and hot shot it out.. flashy and quick and it does look like I'm actually warming up..
Then I'll go into one of these effects:
2 card monte - such a classis - my patter will change with every performance from comedy to serious gambling routine to just slight of hand patter
ACR with a card to mouth finish.
David williamsons Memory test effect.
if I have a table I'll do, "box Clever" such a sick effect...
just a few to name off..
but there are so much, depends on the moment you know.. but usually will do the ones named above.
I'll do an ACR, or one of two or three of my favorites from Royal Road. The Biddle trick is quick and always hits hard so I use that when I need a "hit and run" trick. What I do depends on how I read my audience and what mood I'm in.
my go to effect will be any good colour change trick controling card to the top of the deck then do the clipshift or cardini then i do subway it looks magical then twinsplit remix
Perversion by Chris Kenner with my own little opening with the Clipshift by Chad Nelson.
Then I give them a "Gift" so they remember me and my magic. The gift is a rubber band after an effect about gift giving that I say I only do for awesome people like them. 'Cause if they ask for magic they are awesome.
I normally do mismade bill which I always carry, Crazy Man's Handcuff and then a Card Effect with the reveal on my business card so that they have it as a souvenir and my contact info for a possible gig later on down the road.
I vary between an ACR, a 4-phase one coin routine, my own version of ACAAN, and a 3-phase rubber band routine. Occasionally I may also do a simple force then mindread with a top-change finish or an inversion routine finishing with triumph. If I am completely stuck for props and there aren't even any coins available (it has happened!), I have a short no-props mentalism routine prepared.
lately mine has been Daniel Garcia's .44, I love using the airbrush change. Another effect I love to bring out is Paul Harris' Las Vegas Leaper or Wayne Houchin's match bite
My "Go-To" effect is anything impromptu and without cards! I like to use Stairway, Raw Linkage, Exit Strategy, Slow Motion Coins, my two coin routine, and pressure. Thats what I can think of off the top of my head right now?