Helmet Camera Ideas

Yep, I get it. We have all seen the GoPros on helmets, and they are not received well most times. I'm looking for something more discreet. Not to creep, but to grab a little action for blog and vlog posts. I play with the same group of guys in 50+ and 60+ league play. All draft league, so there isn't that animosity built up.
There should be some small cameras to use to get some decent footage. I'm usually trailing the play and get a great view:)

Has anyone tried out any gear, and what are the results?