I got a hair band at my local drugstore for a few dollars. I cut a couple of slits in it and slid the sensor right into it. I use a safety pin to hold the sensor in place. The hair band holds the HEGduino tight enough to my forehead for it to work and it blocks out extraneous light. It's stretchy and comfortable, goes on easily and eliminates the metal clips.
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Thank you Josh!
Do you happen to have a picture of this? I just got mine and the product didn't come with the headband, and now I'm at a bit of a loss about what to do.
Thanks for the suggestion! That's a great Macgyver!