Is it possible to create tiled clones, with a random rotation of 0, 90, 180 or 270 degrees only?

I can set the randomiser, but that gives a random number anywhere in the range. I want to have a random multiple of 90deg.

Something like this?

That works pretty well - I didn't think to use the cumulation. Thanks!

Me either - just playing around. Never get the hang of it by using it just randomly. ;-)