Don �t have a compilation of conversation starters but maybe these business English videos can helphttp://legacy.australianetwork.com/businessenglish/episodes.htm
Some more links to teach small talk:
http://busyteacher.org/12326-how-to-teach-small-talk.html
http://busyteacher.org/14144-how-to-teach-small-talk-workplace-business.html
http://busyteacher.org/13093-ppt-for-high-school-students-icebreakers-and.html
http://busyteacher.org/18952-professional-small-talk-conversation-comprehension.html
Conversation starters (might not be related to business):
http://busyteacher.org/11989-10-conversation-starters-never-fail.html
http://busyteacher.org/1959-conversation-starters.html
http://busyteacher.org/19364-conversation-starters.html
http://busyteacher.org/20831-strange-conversation-starters.html
BTW you now don �t need to be logged in or registered in busyteacher in order to be able to download resources.
Here you can find different dialogues related to work. All audios have scripts which you could use as roleplays.
Also check
these business English topics, there are also short audios with scripts.
http://learnenglish.britishcouncil.org/en/youre-hired