From the introduction:
You will need:
... food and water. Enough for three days. Enough to keep you moving.
... stones and feathers you’ve collected over the past year, one for each new moon come and gone. The belated gifts you owe, chosen for their beauty.
... shoes built to last, and perhaps an extra pair. While they may fix them for you, they’ll have no more to offer. Socks, too, warm and thick.
... your name, written on an autumn leaf. They will ask for this first, so be prepared to surrender it, and do not try to remember it when it's gone.
... mementos of those who weigh heavy on your heart. Pictures and curios. Souvenirs from old stories. You’ll need to keep these close, for now though the weight will bear down on you the further you travel. It will be unexpected, and heavy, but do not leave them behind. Not yet.
... a coin of gold and a coin of silver. You may be tempted to bring only one, clouded with hope that the court you seek will be the one to answer your call. Such things are never certain. Whosoever comes to collect, you must go with them. Keep their coin, but discard the second before they find it hidden upon you. Sneak it into a tree hollow, if you can.
... a scrap of ivory sheepskin. Kept dry. Unsoiled.
... a bag of leather, to carry it all.