I just spotted a recipe for chocolate chip muffins and I was interested. In fact, many chocolate chips are already vegan. The most common chocolate chip brand in the USA is Tollhouse/Nestle and they contain milkfat...therefore not vegan. But I had no problem finding some that taste the same as the Tollhouse/Nestle kind. Besides, doesn't milkfat sound disgusting. The chocolate chips I recently bought are 365 brand.
I'm not sure if you can see the ingredients on that last picture, but they are:
Sugar, chocolate liquor, cocoa butter, soya lecithin (added as an emulsifier), and vanilla extract.
Don't be surprised if I show up at your house wielding desserts this holiday season!!