Holiday (Adventuring) Party

Just found out all my nieces and nephews are going to be in town for the holidays and I want to do a themed one shot with holiday and toy themed premade characters.  I already have a few ideas (Care BarBEARian, toy maker artificer, Circle Star of Bethlehem Druid, Rock ‘Em Sock ‘Em Robot Monk, Sugar Plum Archfey Warlock) but I’m open to other suggestions.  I’m thinking lvl 5 characters with at least one per class 

Perhaps a benevolent winter themed Arch Fey? A la Santa Claus? Maybe a green furry monster stole his magical gift bag? And Christmas can't happen without it!