A pillow-fight gone wrong ends up with a broken time-turner and sends five Slytherins from 1974 towards 1993. It would have been fine but they had no way of going back. Secondly, a murderer was on the loose - it's not quite safe for children. (I'll never be satisfied with the summary, will I?) (Also on AO3)
Three Potters, two Weasleys, and one Malfoy, after stealing an ancient book and quill capable of rewriting history itself, found themselves in year 1961. They have a simple, yet not so simple mission: stop Voldemort and save everyone. (Rating may change.) (Another twisted Time Travel Fic.)