can anyone spare a few shrinkies?

I currently have microring highlights, but occasionally the rings are visible in my slightly thin and definitely flat hair. I've heard great things about shrinkies and would like to try them. Would someone mind popping a few in an envelope to me so I don't have to buy 450 of them? I would really appreciate it!

Also, from what I've read, I gather it's possible to use a flatiron on them as long as it gets hot enough. I have a multi-temp ceramic iron that will certainly be unwieldy, but hopefully good enough just to test.

If some incredibly kind person has the time and some spare shrinkies, please send me an email at leia1979@comcast.net Thanks!