NEMA 5-15 Socket Cover
thingiverse
This is a simple NEMA 5-15 (standard US) socket cover that can be used to protect your outlets. I guess that it could also be used to protect kids from the outlets, but you'll need to responsibly use it at your own discretion. Instructions Print vertically with supports so that the prongs don't break off inside of the outlet! (Thanks to "Guest")
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