An easy little nozzle wiper that assists with clearing any zits off the nozzle, which may accumulate when it parks. The slot is 1.2mm wide, and I used the silicone from an extra heater block sock (specifically, the stock sock from an Ender 3). If you have an old sock around, and its walls are roughly 1.5mm thick, this should work for you. Use an X-acto knife to cut the walls/angles off the sock to create a flat rectangle: leave it as big as you can! You can always cut more off or move the holder down...you can't add more if you cut too much.

Insert the silicone into the slot (you can use the blunt side of an X-acto knife to help squish it in, if you need to). Then, position the wiper by pushing it onto the stalk of the stock pad. It should angle out slightly. Object of the game is to position the holder so that the wiper is as high as possible, without it getting caught between the nozzle and the stock pad. You can move the holder up and down until you get it just right. (This might sound complicated, but it's really very easy. Take a look at the picture if you want a little example).

I printed this in PETG (but PLA should be just fine). Print it on its side like you see in the stl picture. It shouldn't need any supports, but if you find your printer doesn't bridge very well, you might need to increase parts cooling or use supports to print the hole.