Not sure how many people will actually find this useful, but I just realized it myself, and it's pretty helpful.
I find the "right-click - send to:" option immensely helpful, but also like that it can be customized. I am often organizing and reorganizing files and folders, and find myself cutting and pasting to the same directories 80% of the time, and then a new directory for a month or two... Today, as I hit up the run box (Windows - R), and then entering the sendto directory (shell:sendto), I tried something new. I went up a directory, then right-clicked and selected "create shortcut". Then I cut and pasted the sendto shortcut BACK into the sendto directory.
Light bulb! Now I could right click on any shortcut, and "send to - send to!". This lets me quickly and easily add to the right click options. Awesome!
Nota Bene: One must only use this feature on shortcuts. If you use it on the original directory, you will copy the whole directory into the sendto directory - certainly not what you would really want.
Enjoy it for what it's worth!