Source for 45mm square LCD?

[fluke]

My wife thought of a very cool case idea the MIDIBox FM i'm planning on building.  However the best mounting position for the LCD in it is a 45mm diameter hole.  Does anyone know where i can find a round or square LCD of at least 45mm diameter but not much more?

A PalmPilot would work, but i'd rather not put one in as it would be awkward to install software on it as i won't be able to easier remove it.  Then again, that may be the cheapest option.

[stryd_one]

Nokia screen?