Nowadays online vendors also started to integrate Bitcoin (Dell, Microsoft, Overstock.com, etc), so while you are at it might as well have a look.
Apart from obviously allowing to take Bitcoin, it could also replace Western Union or bank payment for high risk transactions. For example, when you get orders that might be legitimate but look risky (high amounts, unusual countries, etc), make them pay with Bitcoin as there are no chargebacks and it is much faster and all online.
Everyone should be able to figure out how to buy a few Bitcoin nowadays and for you as vendor the few transaction processors there are actually pay in good old fiat or Bitcoin, up to you.
Or you could use your own wallet (download or online) and do it manually, but then without getting it converted to USD.