Probably one of the biggest innovations when it comes to pleasure technology and, especially, women's pleasure has been the vibrator.  Vibration can feel good all over the body, but vibrators excelled at stimulating the clitoris.  They have given countless clit owners access to pleasure and orgasms, even many who had troubles achieving themselves or with a partner.   Vibrators have continued to enjoy immense popularity for their simplicity of design and ease of use.  Nothing has come close to challenging what a trusty vibrator can do... until very recently.