Questions for You!

I am doing some planning for this week, and I need to know the following. Please respond to this post if you have an answer:

1. Has anyone used the program Sketchup before (previously known as Google Sketchup) and did you like it? Why?
2. How many of you may have a digital camera of your own you could bring on a special field trip / outdoors adventure?
3. Does anyone have any engineering, architecture, or drafting iPad apps you would recommend?

Thank you,

Ms. D