For fixed income, have a look at good quality hybrid debt. They sit between equity and debt in a companies capital structure, so the interest rates are higher than pure debt. There is a range of risk return options. The bank issues are boring but dependable. If you are a thrill seeker (like I was in the GFC) there are corporate issues that behave like equity.
Start your research with the bank issues. With the Basel changes there is more written about them.
I apologise to the Gold Forum for drifting off topic.
