something like:
http://www.alibaba.com/product-gs/1105664875/Colorful_510_long_drip_tip_from.html?s=p

or maybe:
http://www.alibaba.com/product-gs/1087618339/2013_Newest_electronic_cigarette_510_drip.html

but a nice slender driptip would be great! hope fasttech will consider my suggestion