Two options really in your boat if you ask me; Meat bombing or Instructing. Things at the top have slowed down markedly in recent months and this can be felt all the way to the bottom of G.A. Get out there, find a copy of the Wings Directory and start calling or visiting these places.
Don't bother with any Multi IFR charter companies until you have more TT. The law change's last year require you to have 750 hours TT to act as PIC on a Part 135 Op. Sending a CV in with 300 hours will see it go in one place, the rubbish bin.
WW