The rubber feet on the bottom of the PS4 slim are shaped like the controller buttons : r/mildlyinteresting
3-in-1 rubber feet set for Sony Playstation 4, PS4 model CUH 1000/1100
Lance McDonald on X: "My original first gen PS4 has been “broken” for years. It would eject discs and beep all day and night because the capacitive eject button was just firing
YUXI Silicone Bottom Rubber Feet Pads Cover Cap replacement for PS4 PS 4 Pro for PS4 Slim Console Rubber feet - AliExpress