She told her to get a wheelbarrow and a bearskin from the king. The king gave them to her, the nurse enchanted them, and when the princess put on the skin, it disguised her, and when she got into the wheelbarrow, it took her wherever she wanted to go.
The princess was given a wheelbarrow and a bearskin by the king, which were then enchanted by the nurse. When she put on the bearskin, it concealed her identity.  She could travel anywhere she wanted to go in the wheelbarrow.