You can't use any other stuffs in order to donate to this server cause it won't be called donation , it's an exchange actually , managements has completely explained the ways you can donate
You have to donate ( if you are interested to ) to this server via PayPal , you can find out more in this link :
http://www.yg-gaming.com/donate.phpYou can try to sell those stuffs that you have in your online games and earn the wanted money and easily donate it to wherever you want .
and here is the prices and the things you would get after each donation .