The organising of the event was a success.

This event is highly organisable.

The organisability of the team was impressive.

The organisings of the event went smoothly.

I bought a new desk organiser to keep my stationery neat and tidy.

I bought a new desktop organiser to keep my stationery in order.

I bought some new desktop organisers to keep my workspace tidy.

I bought some desk organisers to keep my stationery tidy.

The co-organisers of the event did a fantastic job.

She is the co-organiser of the event.