Yes, we all hate Symbian, more or less. But if all you have is a Symbian you have to learn to live with it. And learn to love it.
The app I miss the most in my Symbian is Evernote. There’s no official or unofficial Evernote client for Symbian. There is one for Symbian^3 I guess, but that’s no longer in development and works only in Nokia N97.

But still, you can access the Evernote mobile from your phone. Yes, it’s not as slick or fast as using a native app, but you get full control over your notes in this mobile version. It won’t load images so it’s faster than a normal web site.

If all you need is to make a small note, there’s yet another option. Use Twitter. Everyone has Gravity installed, right? Include @myEN in your tweet and the tweet will automatically saved as a new note. (You have to activate this in Evernote settings and follow @myEN). Or you can simply DM @myEN.

Learn to love your Symbian.