Could you have a brainstorming session with your students? Usually students are working at developing skills the teacher doesn’t even know about — some girls might be able to crochet some items to sell or could bake cookies or students could do a work project at some family’s house for pay (outside clean up jobs or washing windows or babysit or whatever the family wishes to have done). Maybe if a student (or his parents) excel in something like making fresh doughnuts or . . . you could have a Saturday to do that with parents helping to organize. All of the above ideas are things for outside of school time, not sure that is what you are looking for. I do not have any experience doing something like this, I’m just trying to think outside the box to help you think of what might be possible. Often one idea spurs a better one.