Mostly small tools, screwdriver bits really and random small stuff. I don't see myself making something exceeding 10 inches in length. I just don't have the room to have a larger lathe since I still have to get a mini mill
By the way, the tips of the screw drivers should be hollow ground, get a good grinder to go with the lathe, but keep it a good distance from the lathe and mill, and keep them covered with a plastic drop cloth when you use the grinder, the abrasive dust travels some amazing distances and is real hard on the ways on both a lathe and a mill. Wear a respirator too, it's also hard on lungs.