Short adventure ideas needed

Im a college student dming for other college students, so there’s some inconsistency with who can come each week. About half of my players will be out of town for the next 2 weeks, but the other half still want to play. Any ideas for a short 2 session filler adventure I could throw at them? I don’t want to keep giving important information to my players when only half the party is present yknow? Any ideas are appreciated :]