I read somewhere that artifice, archeology and treasure hunting are good skills for a Jedi Knight. But I can't really make anything useful. Even the few hilts and gems I can craft I have to buy materials on the GTN. I'm probably going to just give up on it. It costs too much to craft with this guy.
Admittedly this was a character I created on the first day of EGA so I was too engrossed in playing to do a lot of crafting at low levels, but its kind of pointless now. My cargo hold is almost full of gems that i can't seem to make anything with. I even have a bunch of ancient relics that say if yountake them to the fleet curator they'll make companion gifts, but while I have dozens of them, the curator doesn't do anything or even want them.