The Voice Changing Telephone is described as the perfect low-cost device for making your voice unrecognizable during a call, and it allows you to switch between a low pitched voice and a high pitched voice, so the person at the other end could believe you are from the opposite sex.

Buy it at Chinavision.com

A step by step guide on how to successfully hack into a cell phone voicemail box. Warning: I am not responsible for any malicious, or harmful acts that may come of this. May not work with all cell phones.

HOW TO: HACK INTO CELL PHONE VOICEMAIL - Watch more free videos

Spoofcard.com

Phonegangster.com gives you the ability to make your phone call totally anonymous to another party. Upon calling another person, you will get to pick what number you want to show up on their caller id. This service is fun, legal, and inexpensive. Best of all, there is no way they can find out what phone number the call originated from. What are you waiting for? Let us be your main source for spoofing the caller id to a third party.