Magnetic decora switch cover
thingiverse
You will need 2 6mm x 3mm magnets per switch. You'll need to press them into the holes in the cover. I found its easier if you take a razor blade and bevel the rim of the hole before attempting to press them in. You can find the magnets i use here. https://www.amazon.com/dp/B07NV52KW3/ref=cm_sw_em_r_mt_dp_U_7TvSDbTJPZ3ET I am not affiliated with this company, it's just what I use that works well. These covers will fit on any standard decora switch that has ferrous screws holding the cover plate on. It just snaps into place!
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