You can buy a MacBook sleeve that looks like a macOS folder.

The Untitled Folder Purse is the Untitled Folder Wallet grown up to laptop size, this time as genuine leather instead of vegan (fake) leather. A great gift for any Apple fan, and more practical than the iPhone Pocket.

For a genuine leather product, the $120 (14-inch) and $140 (16-inch) price tags seem reasonable.