SSkim, The AFR lists these in the markets trading section. Currently Westpac,ANZ,Tabcorp & AGL have or are close to releasing offers. There is always risk - check were these rank against other debt should the company fold. Also check the rate of return against share dividend - the debt instrument has a structure in calculating the return whereas the is no garantee that a dividend will be paid or that same rate held over time.Westpac/ANZ both 7% +; Tabcorp 8%+ ; AGL havent seen a rate yet.
Ive also used some Cromwell Property Syndacates paying @ over 8%.
Apart from the above use 3-6 mth term deposits to round out the income production side of the portfolio.