Shrinky....Duds?

Adventures with shrink plastic!!  As I spend countless hours roaming through Pintrest, I came across a whole bunch of shrink plastic jewelry and ideas that were super simple looking, and some ideas to use any type of #6 plastic, like Solo cups, food containers, etc.  SO of course, I'm off to the dollar store and pick up a pack of clear #6 plastic cups for $2.  Not a bad deal, right?  After several duds, I've determined that I think this plastic is too thin, and I should have spent the extra 50 cents to get the red, durable Solo brand that have turned up better results.   Oh well, but, here's what I salvaged from the near 10 attempts I made the past few days....