This semester I took Logo & Identity Design where we had to create our own logo and stationery set. Here's what I came up with for mine.
Here's my logo.
Here is my business card. It's long because the end of it folds in so the front is all white and the back is black. The inside has the QR code and contact information.
This is my envelope, not folded.
This is my letterhead: one blank, one with text, and a second sheet. The teal logo appears on the back of the sheets.