If you've ever taken on a task that requires you to click a bunch of times, or even multiple times per second, a program like Free Mouse Auto Clicker for Windows should help out quite a bit. This program allows you to automatically click anywhere on the screen at a precise interval that you set when starting the program. It features a pretty easy-to-use GUI, simple installation, and low resource usage to help your computer still be able to process other things at the same time. This means you can have an intensive process like video rendering or something going in the background, while you also complete tasks that require constantly clicking in the foreground.
There are quite a few programs that accomplish the same "Auto Clicker" use-case, but this one has an edge in general usability and ease of installation. It's just a very simple program that anyone can pick up and use no matter their technological background. It's also completely free, as software like this should be. This software also contains a few features not usually seen by these kinds of programs, such as being able to set a hotkey for your left-click and right-click on your keyboard automatically. You can use this to control the program and also start and stop the clicking at any time. You can also set the program to do different actions, including setting an auto clicker for any mouse button freely. Another small benefit this program has over some of the competitors is that setting it to repeat double clicks allows you to automate any task that might require those as well.
This program is compatible with basically every Windows OS to still be used today, from Windows 10 all the way back to Windows 98. It's pretty useful to be able to send something like this to anyone and know for a fact that they will be able to use it no matter the Windows OS or version they're using. It only makes it simpler to share with your friends or family. The program seems to get fairly regular updates as well to work with the newest Windows 10 updates at any time and was last updated in mid-2019 despite it being first created many years ago.
Use it to automatically click and idle on anything you want!