Mock Thanksgiving - what should I bring?

My best friend is hosting “facegiving” – a mock Thanksgiving tomorrow night and everyone has to bring a dish of some sort. Because she lives all the way downtown, I will have to take a train and a subway and then still walk a few blocks to get to her, so whatever I make needs to be easy to carry. There will be 15–20 people and I thought it was be easiest to make candied pecans (easy to make, easy to carry, just easy). Does anyone else have any other suggestions? And does anyone know how many pounds of pecans I’ll need for 15–20 people (2lbs ish??)?