Removable bung for timber door frame

[adonis]

It's the time of year when I put the xmas lights out and I always have trouble routing the cable around the wooden door, so I want to drill a hole around 20mm wide in the hardwood panel under the sidelight.

What can I use to block the hole up the rest of the year, I was thinking of a tap hole blanking plug but it would stand out not being wood colour.
Has anyone have a better idea?

Thanks

[Gadget]

One of these? you could paint it any colour you like.
https://www.amazon.co.uk/Plastic-Covers ... 7f6b5&th=1

[big-all]

top or bottom off the door frame away from the main line off sight or even behind the bell push double sided tape temporary moved a bit in the festive season