This is an interesting little product hack. So you buy the mug from their zazzle store, but how are they dropping the QR code on each mug? Backend of Zazzle?
Create a coffee mug with a personalized message, which will be revealed when you
scan the QR code ( or visit the URL) on the mug. You can have as many messages as you wish.
Product Hunt Regular
Journal 29: Interactive Book Game
Product Hunt Regular
Journal 29: Interactive Book Game
Product Hunt
Journal 29: Interactive Book Game
Golden Kitty Awards 2016