What you think? We need x money(10 people HT+tickets+rest) and 10 volunteer (or more).
Every volonteer gets 500 graft.
Everybody who give 1$ - get full documentation, 4$ - could be volunteer ?
When the money is collected, and list of volonteers made, we pick randomly 10(or more) of them.
We get answers, full documentation before/after etc...