Packages are mysterious gifts from the character's home world that appear in the Post Office once every three months or so. These packages can be anything you want from before or after your character arrived in Canyon Ridge. However, packages do not roll over, so if you do not use your opportunity to gift the character with something creepy or awesome within one three month period, you can't do it twice in the next. For large items, it's best to talk to the mods first. The Post Office is a large building, but it can't hold everything and you have to remember that whatever you get in the Post Office eventually has to come back out of the Post Office lest it disappear after the three month mark has passed.