I tried to invite a language for a story I was writting. I made the letters and everything, but they were so complex that even I couldn't write them sometimes. xD
I remember some words I invited in it.
Heaven: Horina
Hell: Axelon
Door: Dwesh
And some more, they were for a riddle contained in the story to kill a monster. lol
And yes, it was fun. Good old days.