Have you found that sometimes the best meeting happens after the meeting? That the team speaks their mind as the leave the meeting room rather than while they are sitting in the room?
Arrggg - that's not helpful. Why don't they speak up?
Perhaps they want to be respectful or are concerned about how to interject.
Help them by 1. Telling them why you want them at the meeting (their ideas, their feedback, their insights, their cookies etc) and then share some ideas on how to speak up effectively using lead-ins.
Here are some lead-ins to build confidence and make for nice segways.
Have we thought about...
To play devil's advocate...
This may have been addressed, but ...
Tip: If they do speak up, be sure to give them some positive feedback afterwards so that they do it again!