Is there any way to automate a random specific movement (such as blinking)

As I have been animating and doing such simple things as adding blinking to my characters, I have wondered if there is a feature in Harmony (I use essentials) to randomly add things like 2 or 3 cell blinks randomly throughout my animation, thereby saving me the time going through my timeline and manually adding them myself (or at easiest copy/pasting a group of cells which contain the blinks)

Is there a feature that will take a set amount of cells and simply insert them randomly over the course of the animation?

(this could also apply to things such as dangling objects such as ponytails and so on to give them a constant but random movement)

Any advice or ideas would be very helpful here/