There's loads of recipes out there. To be honest I just see what's in the cupboard. I got 4 mini bottles of wine from my so for my birthday. 2 red, 2 white, I can't drink red wine unless I mull it, it gives me a terrible headache otherwise. I'll be mulling one later on this evening.
Don't use ground spices, fresh ginger root instead of ginger spice, and cinnamon sticks, whole cloves, juniper berries etc, but it's up to you, I've heard of some people putting sausage in it, but I don't fancy that.