
I've been using this goofy little bell for over a year now and I love it. By attaching it to a dry erase marker and using the marker to write the page number I want everyone to find, I no longer have to do the Old School thing of announcing the page number verbally.

Fewer spoken words; a bit more fun. Always a good combination.
If you'd like to read about how the whole idea was created, check out the Birth of a Notion post in the new Thoughts on Teaching link.
For a shorter, more how-to-do-it version, check out Page Pen in the Classroom Tips link. You'll also find some modifications of the basic idea that have resulted from the experience of having used it for over a year.
Bonus Feature: You'll never again here a student ask,
"What page did you say?"
I think that's worth a buck.

Page Pen bell
NM-COW
color: gold
19 x 25 mm
comes with rubberband
$1.00