Bob’s 2007 Christmas Squiggly Sudokus

In each puzzle, place one of the indicated letters (e.g. SLAVE for the first puzzle) at each of location in the puzzle. Each letter must be used exactly once in each row, column and box. When you are finished, letters in the gray spots will spell out a word or phrase related to christmas.

How To Solve a Du-Sum-Oh Puzzle

(1) SLAVE