I just typed out a whole page of stuff and it disappeared. arg!
Okay so basically what I wrote...
I imagine your plant looking something like this but taller:
I spent some time looking at plant stands but they all look like a cat could easily topple them over. Another idea I had was to switch to a tall planter.
There are some modern looking ones here:
http://www.plantcontainers.com/i-pedestal-planters.php
but I'm sure you could find other tall planters through google.
Best of luck to you.