Widget ideas to embed on your website so it adds to it

Hello everyone.

I am looking for free widgets to embed to some of my websites something like:

[https://www.esportsguide.com/widget](https://www.esportsguide.com/widget)

[https://www.mortgagecalculator.org/free-tools/](https://www.mortgagecalculator.org/free-tools/)

Please share if you know others, thank you a lot!