Super Mini USB Keyboard, Black
Tiny but good
It didn't fully register how small an 8x4-inch keyboard is until I was holding it in the palm of my hand.  This thing is tiny!  It is too small for everyday use, but that's not why I bought it.  I switched to full-size wireless keyboards ages ago, but there are still times when a wired USB keyboard is essential.  Sometimes wireless keyboards fail, and some changes (like BIOS tweaks) usually require a wired keyboard.  So I bought this tiny guy because it takes up no space in my spare parts box and it's there when I need it.  I put it through its paces and so far I am very pleased.