This is a remix of the Eibos Filament Dryer Plug from erickraft. The original design works really well, but I found myself losing the plugs when I took them out. I added a short tether to attach the plugs to the dryer.

Here's how you install them:

1. Remove the gasket
2. Place the open hoop of the plug over the gasket
3. Re-install the gasket

I'd recommend printing them out of TPU, but the tether may be thin enough that you could print it out of PLA and get enough flexibility.