Project Ideas, Hmm... #2: Thoughts on an Adjustable Standing Desk

I’ve got a challenging project coming up for my church. The new preschool director has asked for a stand up computer desk. I was going to build something similar to the one I built previously for the church secretary [link], but more square instead of angled. Now I’m thinking I want to make this project:

a) mounted to the wall, (like the other one)
b) able to be lowered somewhat easily for those who don’t want to stand up. The computer there might be used by others during vacation, sick days, etc.
c) similar in appearance to the ‘other one’

In my mind I’m kicking around ideas of how to accomplish these goals. One idea is to mount a sort of spine to the wall, and have the desk travel up and down it on a sort of socket. Ideas for making it stay put include a hole and peg configuration, some sort of ratchet system where the desk can be, say tilted up to move it up or down, or … something else.

I’m not finding anything like what I’m imagining, at least not made of wood. I guess I’m breaking new ground here.

EDIT: Here’s my final result for this idea: [link]

-- Ni faru ion el ligno!