1.   Detailed costing can make the difference between an excellent idea and a ruinous one.

2.   Doing the advanced course directly after the basic was an excellent idea.

3.   That sounds like an excellent idea to me.

4.   That struck Swift-Runner as an excellent idea.

5.   The new arrangement enabled the police to gain an excellent idea of the total troop strength.

6.   There were a couple of excellent ideas in the cockpit.

7.   They also had some excellent ideas about how to structure their family life to avoid it.

8.   One or two excellent ideas came out of the meeting.

9.   What an excellent idea!