[BKh]

I'm wondering what suggestions folks have to improve grip on a reading device. Specifically I'm using a Kindle Oasis. It has a metal back and can actually get a bit slippery. I've tried using clear cello tape, but that doesn't do much. The earlier Kindles had more of a plastic back so this wasn't an issue.

Not interested in using a case. But would prefer a solution that didn't prevent using a case in the future.

Bonus points if it is some regular household object I'm just not thinking of. I had the idea to contact cement some fine grit sand paper to the back, but I'm concerned with loose sand scratching things.