1. Happy Halloween.
2. Use the light source on your smartphone as a sign projector.
3. You can choose a file that fits your smartphone size.
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Halloween sign projector for smartphone.
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Creative Commons Attribution-NonCommercial-ShareAlike
You can distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, with attribution and under the same license.
Licensed under CC BY-NC-SA
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