This would mirror the Japanese tradition of taking a paper book to train stations and other places to stamp their unique stamps into the book See Site Unreachable
- Sell stamp sponsorships to business
- Give free stamp to Iffy books
- Hire local designers to design stamps
- Produce and sell a book people can buy to fill with their stamps
- sell sponsored pages in the book
- checklist of all businesses who sponsor a page
- stamps for tourist spots
- stamps for train stations
- for uber-sponsorship, a business could sponsor a bunch of free copies of the book
- ask businesses to sell copies of the book in their locations