Many people have asked where I got my bottle tips..I bought them many years ago at Hobby Lobby in the craft dept "I think". They were one of those things that sat in a drawer until I watched the video from Sharon Schamber and the light bulb went off.
http://www.sharonschamber.com/
Some people are having a hard time finding them...I did a google search and found these. They are almost the same thing and very reasonable in price. =) I hope this helps.. =)
http://www.dharmatrading.com/html/eng/1708-AA.shtml