Is there any easy way to copy from a VirtualBox Guest to the Host?

I think the best solution is to "ssh" into the server and work on it like that.

The best known SSH client & terminal emulator on Windows is probably PuTTY. When you use that, it will allow you to copy/paste text from/to it.

I believe you need to install the Virtualbox Guest Additions. This adds certain integration features like the ability to share the clipboard between the host and guest.

After installing guest additions you see the options for clipboard settings such as "Host to Guest", "Guest to Host", as well as "Bidirectional" clipboard sharing. The last is my preference.

In the Oracle Virtualbox settings, go to Settings > General > Advanced

There is an option for Drag and Drop. Select the direction you want to copy the text.