I try to use a opinion opener for problem senario that I have at the moment, my faveorite one is this:

Me and my best mate are in the middle of a debate, we have this fancy dress party we have to go to but we've been to loads and we need some new I deas, the theame is "B" (so you have to dress up as somthing starting with B). It works as a DHV coz you have said you've been to loads of partys