No. I dont know one and that is the problem actually.
We will have to change our bitcoin with fiat just so we will not be needing to go to the department store to buy.
We will buy using the COD (cash on delivery) or using our credit cards up until now for online stores.
But bitcoin is young as they say. Give it a chance. Let us see if there will be a merchant who will be willing to risk making a company using bitcoin as a payment method.
Hm, about adoption - most of the people claim that the security and technology (scaling) are the largest obstacles. Although it is true that those are very large obstacles that Bitcoin has yet to step over, I actually think that the volatility is the biggest problem for adoption with merchants. It is more easy for sponsorship, small ventures etc - they all see Bitcoin as an opportunity and sometimes are willing to risk, same as all of us that are here, but a large vendor needs a stable currency or token, there is no sense in risking a stable business. They can invest in Bitcoin, but that is another thing.