The two part inventions are probably a bad idea, I imagine you would hate them.
Why don't you try something by Debussy?
There's the Arabesque no.1, Clair de lune, or The Girl with Flaxen Hair. Those aren't too bad (but would probably still be challenging) and I don't think you would be bored by them. Plus, everyone and their mother goes crazy about Clair de lune (my mother included).