Display a random CMS item

Is it possible to display a random entry from a Plasmic CMS?

e.g. to have a testimonials, ordered by RAND()?

Yes, you can use a dynamic value. Grab the list of testimonials, generate a random number within that list, and display only that testimonial.

thanks @jason - is there a neat way of displaying X random items rather than one at random?

The scenario here is if there are 5 testimonials in the database, and I want to display 3 at once, but without any repeats.

Yes, you should be able to generate X unique random numbers and display them all with repetition.