European Bond Derivatives?

Where can I gamble on bonds? I would like to know what are the most sophisticated derivatives available to the average joe who wants to make a play on European bonds and the names of a few web sites where I can buy them. I gambled on Oanda with margin with XAG, EUR/USD, etc. a bit a year ago. That's the extent of my experience.

Can't anybody help a little??

Very rarely availaible to retailers.

But AvaFX has the German 10Y Bond
SaxoBank has some Futures contracts on European Bonds, but high margin requirement -> that is you need a lot of cash to trade them

But don't waste too much money on this, you will lose, so stick to shorting Euro.