The phrase "marvelous things" refers to something incredible, amazing, or extraordinary. It describes something that is highly impressive or captivating. Full definition
What sorts of marvelous things might we find in its universe today? (kotaku.com)
So many wonderful things come from that resource of wood — that marvelous thing called a piano, your guitar, the fine furniture we all enjoy, building materials for our homes. (dotearth.blogs.nytimes.com)
In fact, it suits according to the fashionable accessories that deliver marvelous things for everyone. (attraction2fashion.com)