a few points:
Yorkshire pudding with christmas dinner 
Also, um, aren't those that follow that bit of leviticus, the kind of people who don't generally have a 'christmas' dinner, so the prawn and pigs in blankets don't really apply to them?
You can eat gold (not so sure about frankincense or myrhh tho), i have done so (i'm very rich you see), and it's also good for gout (i'm also a victorian gentleman who drinks too much port) apparently. it tastes of nothing btw
Ginger trifle (i use a large oval deep serving plate but a glass bowl is also fine:
Layer the bottom of your dish with slices of jamaica ginger cake and drizzle over lots off cointreau (orange blossom water if requiring it to be non alcy).
Top with orange segments (done without the pithy bits in that chefy way by cutting top and bottom off oranges and then slicing down the sides and cutting into the segments to remove the orangey bits but none of the white gack).
Make a good hard custard (properly - no packets allowed) and when cool cover the orange layer with it.
Top with whipped cream and crystalised sugary ginger bits sprinkled over. Slice an orange in half then slice thinly in half moon shapes and decorate around the edge of the plate in a scalloped pattern to make it something fanny craddock would be proud of. Serve with Stones ginger wine for full koalamas day effect.
The taste of ginger and orange is the taste of christmas to me. it's the one dish we must have every year. everything else is a bit meh.