Presents from Mom and Dad started to roll in early, like the 21st'ish they'd start popping up under the tree, minus any large/special presents. Santa's presents were wrapped different then the early gifts, but the ones from the parents that showed up on Christmas, had the same paper a year or two.
But one is for sure, Santa writes exactly like everyone's parent. The "From: Mom&Dad" always looked identical to "From: Santa"