Doing something really hard, challenging or just outrageous can raise a lot of money.  It will also raise media attention and bring publicity for your cause which can be an added bonus.

Some things to bear in mind:-

1 carry out a risk assessment and make sure it is reasonably risk free.  Do not let anyone attempt anything that they are not physically prepared for.

2  Make sure you let the press and media know well in advance.  There is no point in doing it if you miss out on that all important photograph.

3  Get the sponsors first.  This might be the harder task than the challenge itself.