So I wanted to see if I could do a DIY version that wasn't so costly -- and I managed one that I'm quite happy with for only $4.99!
1. Procure fake butterflies from a craft/hobby store. I got mine at Michaels; a whole package of them for $4.99
2. The butterflies that I got already had little wires attached to them (though if yours didn't, you could substitute jewelry wire for a few dollars extra.
3. I then started to wind the wire to attach them to a headband. I used a two strand one that I already had. {Mine wraps all of the way around my head, but I would recommend a hard one that slides on and off more easily)
4. Attach as many or as few as you'd like, and then, presto, butterfly headband!
Have a Happy Halloween everyone!!