This just arrived in the mail just now when I got home from work. It’s a MicroSD to MiniSD to SD Adapter (whew!).
I had a microSD 8G lefover from a previous smartphone (as shown in pic) and like to use this in the HTC Advantage. I picked up this little beauty from eBay Australia for AUD$7 (inc postage). The HTC Advantage supports SDHC and so my microSD->miniSD now provides the Advantage with an additional 8G of storage on top of the 8G Microdrive.