Materials:
Plastic: It needs to be marked #6. Many to-go containers seem to work. Look for the number inside the recycling triangle. I used salad to-go boxes from my local pizza place.
Sharpie Markers in a variety of light colors, plus black.
Scissors
Hole punch
Toaster (or regular) oven, preheated to around 250 degrees F
Polyurethane for sealing (optional)
Step 2: Cut it out!
(Note, the directions below are for a pair of earrings, hence 'cut two pieces'. Obviously, if you only want 1, cut one!)Cut out two pieces of the flat parts of the plastic container in the size/shape you want. Mine was about 3 inches x 2 inches. You could also do circles or other shapes, but you need to round off any corners because corners will get sharp when shrunk. (note: all plastic doesn't melt the same and keep the same proportions, so cut both pieces running the same way. e.g. if you're doing 2 rectangles, cut out one large rectangle and cut it in half to ensure your pieces run the same way. If you're doing circles, be sure to mark the top and put your holes in the same place.)If there is any impressions on the plastic (like the #6 symbol, or words) you can just color over it and it will go away in the shrinking process. But be aware it may be a pain to color or draw lines over.On each one, use a hole punch to make a hole in the top center.
Step 3: Draw your doodle, and color it!
Draw your doodle design on each one with the black sharpie. The designs don't need to be the same, and be creative. Just a series of shapes and doodles. If you're nervous about drawing it, practice on a spare piece. And you can always draw something on paper and trace it on to the plastic. Remember, shrinking hides a multitude of sins!Randomly color in the design using a variety of light colors. Colors get way more intense when shrunk. The black will smear if you touch another color to it, so be careful. Again, shrinking will hide most issues.Alternately, draw your design on the front, and turn over the plastic. Color it on the back! You won't have to worry about smearing your black design. However, make sure you don't leave any gaps between your colors (ie, color over all the black lines!) Otherwise you'll have gaps in the color when shrunk. You could also color the whole back in one color if you want to go simple.
Step 4: Time to Cook!
Place your colored piece on a square of parchment paper, on a tray in your toaster oven (preheated to about 250 degrees). Watch the magic happen! Don't worry... it will curl up. and curl up again. then finally settle down to the smallest size. If your oven is already hot, this will happen almost immediately and take maybe 30 seconds to complete the process. Keep watching!Sometimes, if you have a long skinny piece, it may turn on it's side and curl up. That's fine, just flatten it out when it's done.
Step 5: Remove from oven
Caution! It will be hot!!If it's not quite flat at the end, you can press it down flat immediately. Note, depending on your plastic, it may not be quite the same proportions as you started with.
Step 6: Sealing - optional
The ink will scratch off of the shrinky plastic, so if you want to seal the charms, I've had the best success with dipping in polyurethane and letting dry overnight. However, I have also had some hairline cracks appear by the hole when i've tried this with tear drop shaped charms. So ymmv. Unless you want the colors to lighten considerably, don't seal with any sort of spray acrylic that contains acetone. Although, it may give you an interesting effect!
Step 7: Enjoy your cool stuff!
String on a chain, add earring hooks, stick on a key chain whatever!
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