Belbin Team Roles > an assessment tool that looks at team roles. We have used it with the International Leadership Team. It is a little pricey but gives great insight on the different roles that team members play.
Home Cell Group Explosion: How Your Small Group Can Grow and Multiply [With Study Guide] by Joel Comiskey. Highly recommended by Leif Gustafson, team leader in Siberia. He writes, “I love to think of my team as a cell group because it makes my ministry clearer for me. Even if you only look at the page on what contributes to cell group multiplication and what doesn't (at the end of chapter one if I remember correctly) it makes this a worthwhile read. It is good at helping make priorities with our relationship with God and prayer for those we are caring for being at the very top of the list.”
A trust survey which has been used by our Macedonia field in 3 successive years. This survey was adapted from Covey's book, The Speed of Trust. The two survey files are pretty much the same, with one being for self and the other being for the team or the Ministry Leadership Team for the area. The Macedonia area did both of these the first year, and then each year after that they just did the team survey.