"And you shall write them on the posts of your house and on your gates..." (Deut.6:8). With a mezuzah, we fulfill this commandment by writing the words of the Shema on parchment and placing it on the doorposts of one's home with the parchment placed inside a cover or box to protect it from the elements (the mezuzah case).
Niches for mezuzahs have been found on doorposts of buildings from settlements over 2000 years ago, and this commandment is kept faithfully by Jews to this very day. Many also put a mezuzah on the doorpost of every room in the house.
Handcrafted in Israel by Etz-Ron, you will find a large variety of wood mezuzahs as well as wood combined w/ silver and other metals. Mezuzahs make a great house warming gift.