Shoes of Walking— These objects, when placed upon the feet of
their owner, will enable that character to walk through a chilly dungeon without catching cold.

http://shankell.files.wordpress.com/2011/07/take_a_walk_in_my_shoes_by_hiilda.jpg

These items may be found in the bottoms of
closets, in the middle of living-room floors, and on the feet of other
characters. There is a 10% chance that a closet with shoes will contain a
shoe tree bearing from 7-12 pairs of shoes. Once picked, the tree will not
sprout new shoes.