The one I want the most, at least that comes to mind immediately, is the Safari bag. It came in some awesome color combinations. Before I really got into vintage
Coach, I lost out on an auction because I refused to go over $70. I think the auction ended under $100. Now you'd be lucky to find one under $500.
To be a real Bonnie Cashin, it can't have a creed. There are some pre-creed styles that may not have been designed by her but it is pretty hard to prove. If you find one with the striped or otherwise patterned lining, I'm pretty sure those are Bonnie Cashin.