From The Duties of Parents by Jacobus Koelman (1632-1695)
Do not allow your children to celebrate the days on which unbelief and superstition are being catered to. They are admittedly inclined to want this because they see that the children of Roman Catholic parents observe those days. Do not let them attend carnivals, observe Shore Tuesday [Mardi Gras], see Santa Claus, or observe [the] Twelfth Night, because they are all remnants of an idolatrous papacy. You must not keep your children out of school or from work on those days, nor let them play outside or join in the amusement. The Lord has said, “After the doings of the land of Egypt, wherein ye dwelt, shall ye not do: and after the doings of the land of Canaan, whither I bring you, shall ye not do: neither shall ye walk in their ordinances.” (Lev 18:3). The Lord will punish the Reformed on account of the days of Baal (Hosea 2:12-13), and He also observes what the children do on the occasion of such idolatry (Jer 17:18). Therefore, do not let your children receive presents on Santa Claus Day, nor let them draw tickets in a raffle and such things. Pick other days on which to give them the things that amuse them, and because the days of Christmas, Easter, and Pentecost have the same character, Reformed people must keep their children away from these so-called holy days and feast days.