Ever since I crowdfunded the first ACE Gamebook, Alice's Nightmare in Wonderland, back in 2015, I have tried to offer backers on Kickstarter something extra. In the case of Alice, this was my first deck of themed playing cards (which, along with bespoke dice, went on to become a feature of the series), and the first themed All Rolled Up*.
The Wicked Wizard of Oz had bookmarks that allowed you to play as different characters, including two bonus characters - the Wicked Witch of the West and the Wizard himself.
NEVERLAND - Here Be Monsters! had some rather cool extras, if I do say so myself. Not only was there a cloth map of Neverland, there was also a soundtrack album, of sorts.
I upped the ante with Beowulf Beastslayer, offering backers miniatures of Beowulf and Grendel, who have been joined by Grendel's Mother, since the Heorot RPG also funded on Kickstarter.
'TWAS - The Krampus Night Before Christmas offered backers the chance to purchase some Krampus Kards, rather than the traditional Christmas cards.
High level backers of the Dracula: Curse of the Vampire Kickstarter received their books in a wooden coffin, along with a stake pencil, wrapped in black tissue paper bearing the seal of the House of Dracula.
My most recent ACE Gamebooks Kickstarter, that funded production of RONIN 47, gave people the chance to buy some posters of Neil Googe's awesome artwork (coloured by Len O'Grady), as well as the usual art prints.
I'm still deliberating as to what the next ACE Gamebook will be, but rest assured that I will look for some unusual angle when it comes to what rewards I can offer to those people who support my crowdfunding projects.
* The last project to feature one of these was TWAS - The Krampus Night Before Christmas.