Lazyweb: I have local servers that have HTTP(s) endpoints for doing Special Events.
What's the easiest way to get a physical button that I can stick some batteries into, and it'll trigger that HTTP call (over the wifi) when I push the button?
@foone shelly used to sell a WiFi Button (https://kb.shelly.cloud/knowledge-base/shelly-button-1). Battery powered and can send http requests on click, long click, double click and long double click. It seems that's now discontinued. They were always a bit slow (0.5-1s) to send those requests with all the WiFi/IP connection setup required each time you wake it up, but otherwise work fine.
Shelly Button 1

We developed Shelly Button to help you easily activate or deactivate any device or scene manually with just a click. Additionally, Shelly Button is so small and convenient, you can carry it with you absolutely everywhere.