A moistener for postage stamps or envelopes can be easily made from a screw-top jar. A strip of felt cut as wide as the jar is deep and made into a roll large enough to fit the neck of the jar serves as a wick. The metal top is perforated, and, after tilling the jar with water, it is screwed into place. This makes a very inexpensive moistener for the library desk.

Perforate Water

An Envelope and Stamp Moistener 1004