1 - Look in magazines, journals, and newspapers for events.Current or historical, that does not matter at this point, both are okay - and recent engaging and exciting facts, and perhaps valuable information that attracts the attention. Articles about subjects that interests you and that are comfortable for you to talk about are good indications.
2 - Jot down ALL possible ideas that comes up for interesting speech topics (Divergent Thinking...Lots of ideas to one good one). I always draft a short list for myself of candidate issues if I am contracted for a public speaking engagement.
And then I skip the ones that are too difficult and too complex to prepare and master in 8 to 10 minutes time.
3 - Review some online books or articles on the subject for more detailed current information about your topic. Or go to a library and ask for books and reference articles about your subject. Without exception all librarians I know will help you sorting out the subject with their advice and recommendations.
For example you choose for an interesting sports or agriculture speech topic.
- Try to understand how the author has covered it.
- What's his structure?
- What points, information or arguments are the strongest?
- What examples and illustrations has she or he used?
4 - Unique and reliable statistics and new discoveries can help writing and refining interesting speech topics.
Look for controversies, rare and strange opinions.
- What do you think of the info discovered?
- What do you want your audience to think of it?
5 - Think about related interesting informative speech idea hints to talk about. When you view your rough list, try to find new points, different angles of view or just turn your thoughts up side down.
Look at the special aspects that surprise the listeners.
For example try these 2 more detailed informative outlines with main points and subpoints. Use my sample structure to add or otherwise wipe steps and stages you do not need.
6 - Look for supporting and also for opposing opinions, plus interesting speech topics statements. Add visual aids where you want to emphasize or to give some prominence to an unimaginable point in your interesting topic idea.
7 - Watch news shows, history documentaries and debating programs - for example the morning shows, internet news, NPR, the evening news, and comedy. They are especially helpful for developing a rough list of interesting persuasive ideas.