I posted this on the LL forum the other day:
If you wanted to do something a bit different, you could give each spell a command word in some ancient dead language.
I've grown quite fond of Sumerian for naming things in RPG settings, and there is quite a large collection of Sumerian and Akkadian words found here:
So for the Fireball spell, the command word might be:
Ganzer [FLAME] + Ellag [BALL] = "Ganzerellag!"
Sometimes the word you are looking for isn't found, so you have to try to think of alternate words to type in.
Magic Missile would be:
Emeĝar [MAGIC] (E-Meng-Gar) + Gagsisa [ARROW] (Missile wasn't in the lexicon) = "Emeĝargagsisa!"
Just a random thought.
You could even have moments like in Army of Darkness where they mispronounce the words...
>: ) mwha mwha mwha mwha!!!