Well it depends on the type of magic your into if you want to re-work your WHOLE routine for the street, I think you should have a little of everything. So, here's my list:
*Stigmata (or just a business card)
*Gaff Deck, which fits with your deck you'll be using
*Witness (try keeping the baggy in your wallet, it's easy to do the trick and I always keep it on me)
*Bullet (works well for a street CIB, and is a crowd pleaser)
*Dan and Dave's Card To mouth (I swear it works for me EVERY time)
*3 silver/half dollars (to do various routines)
*The Raven
*Pen Through anything (get this trust me it works like gold)
And of course a deck of cards, it's up to you on what tricks you do with it. These are just my suggestions carrying all of that could take up a lot of space but, that would be a great start of any street performer.
-RA69