A long time ago I read about making ATC’s cut out of metal. Being adventurous, I rushed right out to our local hardware store and bought a roll of metal sheeting. It is very inexpensive and there is enough to share with every stamper in your neighborhood. I figured there would be a day where I would have “extra time” to experiment with the metal. It’s been on my shelf for over a year.
Recently, “Metal” was the theme for one of my monthly ATC swaps- using something metal needs to be somewhere on the ATC . Since I already had the metal on hand, I took it a step further and used it to make the base of the ATC.
Next spray the transparency with an adhesive to lay over the ATC. Trim any edges. For extra security use a thin metal looking edging tape around the whole piece. All that’s left are a few embellishments and it’s finished! 
Transparencies are just one of the many looks for metal ATC’s. Stamping directly on the ATC gives a wonderful effect. Just use an ink like StazOn for the best coverage. The metal can also be painted, cut into any shape or embossed. The possibilities are endless!