The phrase 'I have brought' is correct and usable in written English. You can use it when you want to express that you have come with something such as a gift, an item, or information. For example: "I have brought a pizza for everyone to enjoy".
"I have brought you Mickle".
I have brought nothing back [from abroad].
It's something I have brought to football!
"I have brought your hors d'oeuvres.
"I have brought about some significant reforms.
I have brought in over 150 boats.
I have brought Ben along to avoid intrusive furniture symbolism.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK