Overlay on dashboard

Hi all!

My first message here.
I run HA on a synology docker.
Core 2024.4.3
Frontend 20240404.2

I want an snow overlay on my dashboard. Just to get in the right spirit :sunglasses: :santa:

Perhaps other overlays later on in the year such as leaves, witches, hearts, ect.

What is the easiest way to do this ?
And is it possible to have a toggle switch? Or something to easily turn it on and off.

Gr. Robbert

No one that can push me in the right direction?