If you really don't know what to do with your money, donate them.
And I will not say to donate to me. There are plenty of organizations that are doing good or help the needy and they could use more funds.
Yes, I know, this means some research, since not too many actually accept Bitcoin...
Why not just save them? There is no reason to use them right away. Wait a year or two, there will be more shops around to spend them in the future. And also the value will propably rise in the next years.
I haven't heard about too many charities accepting bitcoins as donation. Might be different in US though.
I will never donate my hard earned coins in charity, instead I would prefer to save it for future as everyone is aware that bitcoin has great future ahead holding higher price.
But sometime we have to think about those people who do not have money for their food and who spend two or three days without eating any food but only some smaller bits, God will give us more we have to help everyone, if we help others God will be happy with us and will help us in every difficulty.