I have put cuttings in a ziplock freezer storage bag, wrapped it in a kitchen towel, then placed it in a plastic shopping bag. The towel sort of insulates it so the cuttings dont get frost on them. They are supposed to survive up to 4 weeks. I have personally had an 80% success rate after 2 weeks in the fridge. So, yeah, it can be done. Just cut some extras since not all of them will root.