Is it allowed to post links on the forums?
If not just google for "boundanna" and you should easily find their site with some nice ideas. Important to keep in mind is that some of them may be rather dangerous, but I trust you have the insight to determine that for yourself.

I hope this is sorta what you are looking for? Probably some of you already know the site, but they have some new scenario's every few months, so it's worth to take a look.