Where do ideas come from? Do you want to have more creative ideas? Inside, you'll find the not-so-secret formula for cracking creativity. (Adapted from James Webb Young, founder of advertising agency Young & Rubicam)

1. Photo by martinak15 - http://www.flickr.com/photos/martinaphotography/7107814641/

2. Photo by Thomas Hawk - http://www.flickr.com/photos/thomashawk/133115918/

3. Photo by alanak - http://www.flickr.com/photos/67769880@N00/5234912427/

4. Photo by Ken Bosma - http://www.flickr.com/photos/kretyen/2628104710/

5. Photo by Allison Marchant - http://www.flickr.com/photos/carbonated/27339969/

6. Photo by gnuckx - http://www.flickr.com/photos/gnuckx/5544439526/

7. Photo by vgm8383 - http://www.flickr.com/photos/vgm8383/2381791019/

8. Photo by André Mesquita - http://www.flickr.com/photos/andreabu/5475385046/

9. Photo by Ford in Europe - http://www.flickr.com/photos/fordeu/5709826282/

10. Photo by Leigh Jay Temple - http://www.flickr.com/photos/partyofhicks/4486387225/

11. Photo by Justin Brown - http://www.flickr.com/photos/justininsd/6890861030/

12. Photo by Ryan Gallagher - http://www.flickr.com/photos/clickykbd/3734116990/

13. Photo by lecates - http://www.flickr.com/photos/lecates/2539421151/

14. Photo by Peta Calvert - http://www.flickr.com/photos/misspea/8398103206/

15. Photo by epSos .de - http://www.flickr.com/photos/epsos/8067736728/

16. Photo by Zach Dischner - http://www.flickr.com/photos/zachd1_618/7352752372/

17. Photo by Trey Ratcliff - http://www.flickr.com/photos/stuckincustoms/2380543038/