Crochet projects go with me everywhere; on the bus, in the car, waiting at appointments, on the couch or at friends houses. I have a Mary Poppins Purse that i have reserved just for crocheting so it's constantly filled with yarn, patterns, hooks, scissors, stuffing, buttons and all sorts of odds and ends.
Taa Daa, the purse:
I really like it since it have two pockets on the front. I normally have the hook for my current project in the pocket on the left (possibly more than one) and my phone, earphones and bus pass in the pocket on the right. This way my phone does not get scratched by crochet hooks but everything has it's place.