xxx: to decorate the top of the tree with a symbol of the Russian army is strange, if you are not a military. The star of Bethlehem is strange if you are not a Christian.

yyy: I suggest to decorate the top of the tree with a fallos. Fallos is a symbol of new life and in general renewal, as well as joy and pleasure. Just like New Year.

zzz: and apple balls to do in the shape of the testicles, well that it would be quite logical, yeah.