Mounting a Blackburn flea taillight on my helmet

Has anyone mounted a Blackburn Flea rear light on the back of their helmet? How did you do it?
I have a pretty bright rear light (planet bike) and am even stepping up to a vis 180s, but I want an additional light up high on my helmet, that is eye catching, but not pricey. I have a Flea front that I keep with my bike shoes in case I forget to charge my good head light and it’s pretty visible in the day, so I thought the rear might be a good addition. Any thought?

zip ties.

Now I feel like an idiot! I have hundreds of them in nearly every shape, size and color.

Make sure to match your kit!

Ive got a giant numen touchlight that comes with a bit of velcro that fits through the front vent and means I can take it off during the day
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Zip ties are a great idea. However, I use a velcro strap. Its from this website and fits perfectly through the fleas clip: http://www.byekyle.com/ByeKyle/Home.html.

I think its a good idea to have two taillights, one high and one lower, plus if one goes out, you have the other one still able to light up.

Thanks.