Here’s a useful one i made in 2003, one of my first scripts actually! posting it up because i find myself using it ~60 times a day on this current project with curved/angled bits all over it!
A Helper dialog to speed up working with custom Grids. Helps immensely in the workflow of angular modeling (read: silly modern architecture) when combined with a hotkey to create grid and autogrid >:)
Basics: It populates the dialog with all current grids in the scene, including the HomeGrid. you can double click on any grid to activate that, also has buttons to change the view to match the grid, and to select the current active grid. also includes a cycle of the Toolmodes (View/World/Parent/Screen/Local/Gimbal/Grid)
— if there are no grids in the scene, then toggle between the toolmodes
— if there is just 1 grid in the scene, toggle between it and the Home Grid
— if there are grids in the scene, open the window
— if there are grids in the scene and the window is already open, toggle between the grids