Method Kit is an illustrated checklist made of cards. Designed by Ola Möller, the ambition was to make the perfect checklist in a flexible format, summarizing a field. So far there are Method Kits for: Startups, App Development, Projects, Personal Development, Web Development, Gender Equality, and Sustainable Development.

http://www.methodkit.com/

IDEO Method Cards is a collection of 51 cards representing diverse ways that design teams can understand the people they are designing for. They are used to make a number of different methods accessible to all members of a design team, to explain how and when the methods are best used, and to demonstrate how they have been applied to real design projects. The cards are classified as four suits—Ask, Watch, Learn, Try.

http://www.ideo.com/work/method-cards/

The Group Works deck of 91 cards names what skilled facilitators and other participants do to make things work. The content is more specific than values and less specific than tips and techniques, cutting across existing methodologies with a designer's eye to capture the patterns that repeat. The deck can be used to plan sesssions, reflect on and debrief them, provide guidance, and share responsibility for making the process go well. It has the potential to provide a common reference point for practitioners, and serve as a framework and learning tool for those studying the field. The cards were created by more than fifty volunteers (the Group Pattern Language Project) from diverse organizational backgrounds who collaborated over three years to express the core wisdom at the heart of successful group sessions.

http://groupworksdeck.org/

Luma Institute produces a deck of cards to make your Human-Centered Design project plan visual. They help you ideate how to incorporate HCD into your project. Innovating for People: Human-Centered Design Planning Cards.

http://www.luma-institute.com/resources.html

Digital Explorer

What will our world be like in 2050? This set of cards identifies some of the leading drivers of change that affect our future. Foresight has been producing these decks since 2006. Cards are organized into the STEEP framework: societal, technological, economic, environmental and political.

http://www.driversofchange.com/make/research/doc/

The Center for Advantage produces a 166 card set of innovation strategies and solutions used for problem solving, idea generation, and product development. The content in the Innovation Planner Card Deck is based on the Ideation TRIZ innovation methodology that was derived from the analysis of over 3 million patents and 500 standard patterns of technical evolution.

Innovation Planner Cards

Thinkpak is a set of brainstorming cards from Michael Michalko, author of "Thinkertoys" and "Cracking Creativity." Based on the SCAMPER method of ideation, this deck offers prompts for product and service innovation. 

Thinkpak

The Art of War: Sun Tzu Strategy Card Deck describes 54 of the most important strategic principles people use to survive and win during challenging times. Each playing card in the deck represents a derivative of several ideas presented in Sun Tzu on the Art of War.  The purpose of the cards is to offer ways to put Sun Tzu's ideas into actual practice.

http://www.artofwarcards.com/

Developed by the University of St. Gallen, this set of method cards briefly introduces the design thinking approach. It explains the design process as well as the prototyping phases of design thinking projects. 

Download here

Created by musician Brian Eno and painter Peter Schmidt, the Oblique Strategies deck represents a set of basic working principles and strategies to unstick creativity and jog the mind. There is also a great iOS app version.

Oblique Strategies

Created by Dutch design studio Booreiland, 75 Tools For Creative Thinking is designed to stimulate creative thinking in various stages of any process or situation. The toolbox consists of 5 card decks: 1. Get Started 2. Check Around 3. Break It Down 4. Break Free 5. Evaluate & Select. Each card displays a series of steps to follow in order to help you get inspired, organise your ideas and boost your creative thinking skills.

75 Tools