It's all nicely starting to come together. Yesterday I realised that I could have a serial connect and an I2C EEPROM connected to the driving microcontroller (as always, I'll go with the 16F628A workhorse). I'm such a dork to get all excited about that.
Also, there is a place selling plexiglass plates near Nijmegen -- I'll have to call them up and ask whether they have any frosted white plexi. Oh, and I also need hollow plexi tubes for the poor man's neon installation I plan to erect in the downstairs toilet.