Do any of you have experience with building a close up table that can also be tilted a bit toward the audience, so
that tabled routines can be seen more easily?

I needed one for a one time gig and knew I would probably not use it again. I attached the base of my PanaVise to a piece of 3/4" plywood covered with felt. Then I clamped the part of the vise base that holds the jaw head to a microphone stand. The set up allowed me to adjust the height of the table as well as tilt it to any angle. It worked well and I kept the board in case I ever need it again. The PanaVise base is currently back in the garage.

I have not built one, but an interesting design I saw once had a top that was actually two layers hinged at the front edge so the rear edge could be raised. A support piece, hinged between the layers was used to keep the back end elevated. As I recall, it was not adjustable other than the two settings, flat and tilted.

I've heard of using a music stand. (The kind that holds the papers)
but, have never actually tried it.

-Teedpop