What about this idea:

I know that there is going to be some waste on buying BBP for selling it later (plus all the fees)... But it is actually happening the same thing for the people donating BBP right now. We need a way for "normal people" to buy BBP. All the Christians that I know will never open an account in an Exchange. However, I am sure that some of them will donate using this mechanism if it simple and straightforward.
This will for sure help to create volume and increase the price.
And we need a huge marketing campaign. All is about marketing nowadays.