Don't worry about exact proportions, and please don't use your most expensive red wine. If you're going the cider route, buy good apple cider or apple juice. These amounts will flavor one bottle of wine or half-gallon of cider; adjust to your own taste.
1 cinnamon stick
2 whole cardamom pods
1 star anise
3 strips of dried orange peel
2 whole cloves
1 bottle of red wine, apple cider or apple juice
Combine all ingredients in a stainless steel saucepan. Set heat to simmer (or lowest possible heat), and warm through. Strain out the spices before serving.
*Note: you can make this in a slow cooker exactly the same way. Add all ingredients to the slow cooker, set to LOW, heat for 1 hour. Then set the cooker to WARM. Strain out the spices, and serve directly from the slow cooker.