I have a life long friend I've mentioned here before.
He is also a musician.
When he sees someone he knows (like me) getting into a funk like that, his first instinct is to initiate a spontaneous jam slot. Just invite some guys over, see who shows up and jam (of course he will mention it more than a few times to the one person he knows needs it .. just to make sure they show up).
Before you know it we are all trying to write some new 'thing' to jam to .. and the creative juices start flowing.

Go jam for the 'fun of it', and the inspiration will likely follow.

/seems silly simple, but quite often works

I do not work here, but the benefits are still awesome
Make your sound your own!