tsumaranai mono desu ga
(This) is trivial/not interesting, but…
This is not much/just a little something, but…
A traditional Japanese phrase to say when you give a present to someone in a humble way. It’s not commonly used among young ppl these days, but still often used in anime/drama.
This is not much, but (I hope you’ll like it)
Oh you didn’t have to, thank you very much!