What kind of trade would humans that have FTL capable ships, but are otherwise pretty much like us (and, most importantly. have an economy similar to ours) could do with aliens?

The questions is simple: assukme we have FTL drives (and some more affecient energy production facilities maybe), but everything else is the same. We make contact with an alien civilziation that is generally similar to us and have a similaer economy and is somewhat more advanced in military matters and space travel, but otherwise have similar technology to ours, and, most importantly, their economy is similar to ours. What do you think could we trade with them?