Saw many different light switch plates that were Lego-like out there. However, seemed to always have issues with printing and Lego would not stick, you couldn't get it on or off properly. I did mine in PLA, but you can do PETG for a little more durrability with lasting. Been using them over a year, but the kids don't take Lego on and off constantly, so far so good on durability.
Added the double decorative switch plate for those that need it.
.16 layer height
ironing on - I use 15% at 30mm
Supports - I used Default Snug supports.