You will receive a postcard of a collage of illustrations from the book; it will be handwritten (in neat handwriting). Borgman reserves the right to make it ridiculous. He may note the phase of the moon, what's in the news, or the plot of a recently-viewed television show.
You will receive a 32-page stapled copy of Borgman's Book of Questions that Borgman made in his home. Luckily, Borgman has many office supplies. Including a laminator. Which will not be used on your reward, but Borgman really wants you to know that he has a laminator.
You will receive Borgman's Book of Questions. It will be a signed, kickstarter edition you can save for posterity. In an apocalypse, it would be the last book you use for toilet paper and starting fires. It will be a paperback, perfect-bound, about 60-75 pages.
You will receive your paperback copy of Borgman's Book of Questions, as well as a handwritten letter from Nathan Borgman. It's been pointed out that not many people will care whether or not they receive a letter from him. But when was the last time you received a handwritten letter?