Help needed to show to-do list on KDE Desktop

Hi all,

I have syncronized my calendar in KDE Kontact with nextcloud.
So far I’m very happy, but I’m still missing the possibility to display the open tasks (to-do list) from Kontact on the desktop. Is there an elegant way in KDE to solve this via widget or similar?

So far I haven’t found anything.
I can’t imagine I’m the only one who finds something like this helpful.
I could also imagine a solution via conky.