I like the various flavoured liquid ones that they sell in the USA, peppermint and hazelnut being my favourite. They’re not generally available over here, which might suggest something nasty in the ingredients list.
Once asked when visiting someone if I wanted sugar 'ye 2 pls"" when it came it was in a proper mini quarter pint coffee mug...wi two heaped spoons in...when ah got to bottom she ant stirred it right "Because we don't use sugar" yuuuuk put me off for life