Tony...if you want some of my random ways out of writers block read on, if not stop reading now.

Play something you already know, in a different octave or in a different key. Odds are when you do those things you will end up changing the original to something that better fits the new key or octave...then in the end perhaps have all new melodies and chords from when you started.

Past that...playing on top of other peoples music can give you ideas. Im sure you have some random songs around that you hear parts in when you listen ( that the artist ) dint do, create those parts that you want to hear. How does this help with writers block RANDOM.

Just hummm a melody/bass line whatever out before you even think of touching your keyboard. After you have a hummmmed part mapped out...then translate it to the keyboard.

Drums...record a track ( no matter how basic ) of some manual drums, then add parts on top of that. While the styles are good for many things...they cant emulate YOU PLAYING a wack rhythm that goes with something only you understand. Plus if you get into bashing keyboard drums, you might end up doing manual fills melded with the styles.

Heh lots of people will tell you " play different voices on your keyboard " and thats a good GIVEN thing to try. For you...I think if you focused on a nice electric piano ( something warm/stereo not thin/chimelike ), some tremlo/flanged guitar, acousticbass layered with a pickbass...you would write something really nice. Plus I think you could use sounds like rainstorms wind blowing to great effect. Heck I wouldn't mind hearing something like a "musicbox" written by you, I feel you could pull off something truly haunting.