A funny workflow :)

Use the Free Bricsys Shape https://www.bricsys.com/en-us/shape/ (a tricky ergonomy - not sure i all understand but...

you can take also Moi of course! ;)

Make a little drawing (10 seconds) with the Quick Draw function (first icon :)

Take a Snap Shot image - make a PNG image with transparent background (some white surfaces) with any 2D Prog

And Drag & Drop the result on my little prog some posts above! https://moi3d.com/forum/index.php?webtag=MOI&msg=4446.663

Right Click Save image and voilà! :)
Of course that is infinite because you can draw anything you want! : Only your imagination can limit the process! :)