NGO training friends IMA have produced an nice page of NGO training resources. Many of these such as "How good a leader are you?" quiz and mind mapping apply to training in general in fact not just NGOs.
While I'm at it here's Integration Training's own NGO training page.
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From the NGO Resource section of IMA's website:
Mind Mapping Toolkit
The developer of this world-renowned memory tool, Tony Buzan, states that our brains are sleeping giants. Experts say that we use only 1% of our brain’s potential. As a development professional, the benefits of mind mapping can be used in numerous situations, such as project planning, communication, organising, meetings, interviewing, appraisals and brain-storming. New biochemical, physiological and psychological research suggests that mind mapping
brings our brain to life by using colour, images, codes and shapes. This form of note-taking aids memory, increases creativity and opens the mind as an effective alternative to linear methods...
