Can y'all give building ideas for Minecraft?

I only got Minecraft a couple days ago, but friend say I'm good at building and so does her brother so ya- idk what to build next tho 🤷‍♀️
I'll try and make your ideas and then I'll post them pasteboard so you can see them! Anyways, thanks! 🥺🙏

Edit: oh yea- and her brother says I'm better at building than her because she makes dirt houses 🤣 She's been playing for few years too 🤣🤣