Writing a book

I'm in the process of compiling columns that I've written over the past eight years into a book. It's been time consuming, but fun, and will fulfill a dream that I've always had.

 Lately, people have been coming up to me with story ideas for the book. It's especially funny when they ask if it can be included in the book. The idea may be one line, or even as much as three, but there's really not a story, it's definitely not written, and it's not mine. 

What should be the answer when the book is already in the process of being formatted and the stories have been picked? Should I suggest a second book? I've got to get through the first one. 

 I haven't even mentioned everyone who wants to be on Oprah with me. I'll discuss that with her, Oprah, later. (right)