OralB iO series charge light blocker
thingiverse
When you charge an OralB iO toothbrush in your bedroom during the night, the bright charging light can be quite annoying. With this small ring that you can slide over the LED ring on the toothbrush almost all light gets blocked. So, your toothbrush won't keep you up at night! Printing with black filament might block even more light than the copper colored filament that I used.
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