Selling products for bitcoin payment would be best option. You can get the profit for selling the concern items as well as payment you receive in bitcoin will also increase everyday.
That's basically what Overstock has been doing. Keeping a bit aside, which is a (relatively safe) gamble the coin will go up, so the margin is multiplied on this one sale.
Are they really doing that? It's been years, but a long time ago I made a purchase on Overstock with Bitcoin, and I thought they processed through Coinbase. So I assumed that they were just dumping for fiat, like most merchants. I guess the CEO is a big Bitcoin supporter, so I could see them keeping a small percentage. (It would have to be small, otherwise their shareholders wouldn't like the risk)