6.35 mm headphone jack dust cover

This is probably the simplest thing on this entire website. My stereo receiver was continually getting dust in the front headphone jack (which would then turn off the main zone). This is just a very quick 6.35 mm plug to seal that hole and prevent dust from entering. They are $4 for 10 on Amazon, but I needed just one and couldn't find one already on the site. Enjoy.