Oh my mistake. I didn't realize that gave you the right to openly ask for donations to go to a con than others.
Of course everyone has that right. Including you. There's no right to be successful with it, though. Maybe, if you hadn't made that cynical remark further up in this thread, you'd have had a chance that a couple of good friends and acquaintances might have offered to help you out with a couple of their spare euros. Many returning friends and guests of Eurofurence have been sponsored by generous individuals or groups of friends in the past. Asking for donations is not an uncommon thing. Other conventions even have organized travel funds for this purpose.
Besides, there are a lot of other people that would love to donate their talents for entertainment. Why not give them a moment in the limelight?
We (= Eurofurence) did so in the past, and we continue doing so - if those people approach us, and tell us HOW they would love to donate their talents. We generally do not pay fees to contributors, though. Eurofurence does not have the budget for this, and besides, we prefer to keep it an event that is run by people motivated by their devotion to the community. And in that regard, I believe the community directly rewarding those contributors couldn't be further from "just wrong". It's "just right".
(Note: We usually do help cover material costs for events, and if a reliable staff member or long-time contributor gets into trouble, or in case of very important events that are simply worth it, we usually help covering other expenses too. But we do insist on proper documentation. No payment for profit. And when we're out of money, we're out of money.)
That said, if you want to start a fundraiser to get someone else talented over here who can't make it on his own, you're more than welcome to do so. If those talented people you're speaking of, provide the community a great service in return, I think it's a very charitable thing to do.