Here, this is similar to what I have in my laptop bag:
https://www.amazon.com/Ckitze-Round-White-Europe-Adapter/dp/B01C5TG278
Mori Luggage at the mall used to carry them, if you need it ASAP.
That cheap adapter is all you need for laptop and phone. I purchased them cheap on Amazon and carry several when I travel Europe.
I spent several weeks in Czech Republic last year and they worked fine.