My DS has tea on occasion. I prefer to make him a milo without sugar, but if I don't have any I'll let him have some tea. More so he doesn't take mine, lol. I buy normal tea, but he only has it about once a month.
A friend has a range of tea in her cupboard, including decaf, green & camomile. Her DS & my DS often have a cuppa together while we enjoy our coffee's