

Kagi already has weather and translation widgets, they're just pretty unreliable to trigger sometimes
It also has an interactive calculator widget, you need to type "calc" for that, like "calc 1+1". It used to be the default for queries like 1+1, but then it got replaced with the dumbass Wolfram Alpha integration with no option to disable it, see here:
https://kagifeedback.org/d/5326-option-to-disable-wolframalpha/
I agree that kagi is embarrassingly lacking in terms of widgets, though. For example, there is STILL no currency conversion after years:
https://kagifeedback.org/d/7036-currency-conversion-widget/