I put my guns on the wooden covers if no bench is available. Bring your own target frame a stand if you can, sometimes they're out Or nail together a wooden base for your koko head stand. If all else fails, staple a target to a large cardboard box and weigh it down. Bring multiple stands and targets so you can practice transitions.
All the stuff you would normally bring to koko head. Also bring water, gallon or liter plastic jugs filled with water to shoot, base balls are challenging to hit with a pistol (golf balls are even harder). Bind together wet telephone books or stacks of newspaper to capture hollowpoint bullets. Silhouette targets are allowed.
Holster (if you are trained to use one), shot timers. Good place to shoot shotgun. Shooting mat or blanket,
That's what I normally bring.
Also bring a folding handruck or cart, so you don't have to struggle carrying all that stuff to the firing line.