Simple but effective, we like this vibrating nipple pump...
Using the pump to draw the nipple into the cup will make your nipples plumper.
The pump will also kickstart blood-flow to the whole area thereby increasing arousal and nipple sensitivity.
The pump will gently suck your nipples while the vibrations tease and please...why not use two nipple pumps at the same time for double the nipple fun!
A Nipple pump can be enjoyed on your clitoris too and will have the same effect; increasing size, arousal sensitivity.
See left for sex tip, reviews and info boxes on Vibrating Nipple Pump.