Someone should make a program to log your tamas. With each character in sprite form in a tool bar so you can drag it to what it evolved to, and write things under it.
I think that that sounds like a very good idea. For some reason I always ha an idea like this in my head, which is why between 2005 and 2010 I kept a log of all the Tamagotchis I owned and what they evolved into. It was hard to do this, however, because I was running 7 Tamagotchis at once