I'm doing a buffet on Boxing Day in addition to hosting on Christmas Eve and Christmas Day, so I'm trying to keep it as easy on myself as possible (whilst of course, still being delicious). I'm doing vol au vents - I have 3 packs of 18 in the freezer. What are tasty fillings that can either be bought ready made, or can be made very simply by just combining a few things. I was wondering whether the premade tubs of sandwich fillings might be OK? Maybe prawn mayo, egg mayo and coronation chicken? Or do I need something a bit more special?