What should an uncle and a nephew do together on christmas?

My friend is alone at home with his uncle who's only two years older than him. They're both not doing anything on Christmas, so I thought they should have Christmas together. Apparently though, he can't think of anything because he's afraid it would be awkward since they're both guys. Any suggestions?|||When the age difference is much little and they are living together that means they are living more like a friend so they could hang out together and might have dinner or lunch at some place where lot of tourists come.