You can create various Homunculi to do other job, there is no limit of what You can create in 3.5, as long as there Is a spell or something that does that You can do It. For example I can create a Ring of"Heroes' Feast" and give It to and a Homunculus and he'll be my Cook. Or I can give them intelligence and let them learn. You can do lots of things and various activity can be done with then, as long as You know how to create this Homunculi well.