We used to accept bitcoins, but over the course of 3 years there were no donations. I lost the bitcoin wallet in a crash anyway.
Would anyone be interested in using bitcoins if I get such a wallet back?
Something else we can try is Google Wallet; I've sent money with that before.
I think Paypal accepts one-time payments via credit-card as well, for those who don't want an account. I'm open to other ideas too