2000Pcs Self Adhesive Felt Furniture Pads, 3/8 Inch Cabinet Door Bumper Cabinet Door Protector Felt Pads Furniture Sticker Cork Round Bulk 0.05" Thick for Coaster Plants Crafts Drawer Table Kitchen

btw, I bought them at the hardware store, but they look a lot like these: https://www.amazon.com/dp/B0DTK6M2GR + a small piece of double sticky tape (so it sticks on both sides, otherwise the pads dent to pop off if you bump them too hard.