I have the HP case mentioned in the other thread. It's the HP Jornada 520/540. Ovestock.com has it for $4.99 right now. The N810 fits in it fairly securely, while it can still be easily removed when needed (I have short, thick fingers so this is a plus for me). Through the openings in the bottom of the case you can view the LED indicator.

Hope this helps,
David