I love cards and have just received my pack of gamification inspiration cards by Andrezej Marczewski. I got the Black and White cards, but he has just made a version in colour as well.
Andrezej designed these cards (53 in all) to help inspire ideas and build new and interesting gamified solutions. They have been developed to work hand in hand with his user types (Achievers, Socialisers, Philanthropists and Free Spirit).
I have been doing an online course called “Gamification Design 2015” with iversity.org which has been quiet interesting.
In particular Isidro Rodrigo talks about how to design your own gamified experience. He has created video tutorials to guide you through various mechanics, there will be 35 in total—he has not finished them all yet.