You can raise money for your organization by earning a commission when your supporters play poker or slot machines online.
All you have to do is sign up with the program that you want to offer, place some links on your website, tell your supporters about it, and the rest is automated!
Your supporters can help you regardless of their location. Wherever the Internet is available, they can play poker or slots or casino games online and you will benefit without having to ask for a direct donation.
If your organization is big enough, you can sponsor poker tournaments at your private poker tables and the winners can get whatever prize or accolade you wish to bestow on them.
Perhaps you can hold qualifiers prior to a convention where the finalists play in person at your event.
If your organization is smaller, you can still have private tables for the supporters to play at. Imagine helping your supporters bond thorugh a regular poker night - and you get a piece of the action!
There are slot machines, poker, blackjack, roulette, sports betting, horse racing, keno, scratch cards, etc. Whatever you can bet on at a casino in person, you can bet online for the same thing.
Let your supporters gamble as they will anyway, but you get a commission. Everyone wins!