Here's a picture of the little keyboard I bought off of eBay recently. It fits DS5's hands better than our smallest laptop keyboard does (that's a 12" laptop in the picture for comparison). Note that the key widths are reduced, but the height even more so. The lettering says "MC Saite".

Here's another mini keyboard I found, but didn't get because I didn't like the slanted keys, plus it was more expensive (shop around for your best deal etc.). There is a pink version available.

Striving to increase my rate of flow, and fight forum gloopiness. sick