I actually like the stock HP slipcase because it fits the 210 nicely and just looks good. If only it had a belt loop... Then, I figured out how to add one:
1) Tie a flat lanyard or shoestring around both sides of the slipcase. I just used a square knot. Cauterize the ends to prevent fraying.
2) Just thread belt through the new loops.
The mod is both easy and non-destructive.
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