Light Switch Lock
thingiverse
Can be installed either way over a light switch (over the existing cover) to keep the switch from being turned on, or from being turned off. When visiting my mother-in-law, she put blue tape over a light switch that controlled an outlet to keep the kids from turning it off. I whipped up this design and printed it out in clear PLA and she asked me to make her a bunch more! Enjoy! Instructions Just print! You can use supports if the crosspiece sags, but shouldn't be necessary.
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