I use a Pelican 1060 Micro case. It's big enough to hold the KX-1, the
paddle and a pair of earbuds. It comes with a clear top and a solid top;
get the solid top, it has protective foam inside the lid.
If you look at Pelican's different size cases, you might be tempted to get
the 1040 Micro case, but don't; the KX1 won't fit.