sneak a peek
sneak a glance
sneak a look

I sneak a look at the watch of the guy on my right.

I sat down again and sneaked a look at my watch.

She sneaked a look at her mother who looked more herself now.

His dad had said: don't try to sneak a look at it.

He's on the phone, so I sneak a look at his calendar.

I sneaked a look now and then up into the grand stand.

I pull away and sneak a look at the phone - it's James.

Nick said nothing, but he did sneak a look out the rear window.

Every so often, she sneaked a look at his face and frowned.

I sneaked a look at it while he was in the bathroom.