NFS isn't really a solution here. Instead, sshfs is the tool to use.
The local and remote computer will be referring to Desktop and Node, respectively. The specific example I'm using here is that of a USB drive manually mounted on the Node, which contains pictures that I want to transfer to my Desktop.
On the Node
The plugged in USB device is found as /dev/sdb, and holds only one partition, /dev/sdb1.
sudo mkdir /media/usbdrive sudo mount /dev/sdb1 /media/usbdrive
On the Desktop
sudo apt-get install sshfs sudo mkdir /media/remote sudo sshfs $USER@Node:/media/usbdrive /media/remote -o allow_other
That's about it. To unmount do
sudo umount /media/remote
sudo umount /media/usbdrive