We have put up 100 badges as a free resource for all Moodlers at http://moodlebadges.com
We found a lack of suitable badge graphics were available to learning development managers and educators. Most demonstrations of badges in learning management systems such as Moodle used random clipart or unlicensed materials. Our hope is, with a free set of engaging and communicative badges, the adoption of gamification and qualification features in learning management systems will flourish.
These badges are also designed with enterprise and business use in mind, including badges such as induction, fire safety, audits, sales and management.
One of the key design decisions was to make badges that could express without being language dependent and would work at various sizes. Often text in badge images gets lost at smaller sizes.
Moodle is designed to display at 90×90 pixels. We’ve also explored some of the standard sizes used across badge sites in the hope the community can find some consistency, so far we’ve seen 150×150, 180×180, 250×250, 256×256(good for webgl).