Caravan Boot Sale at Motor home Shows

On reading lots of discussion on this site, would it not be a good idea if at Caravan shows they allowed an area where we could all bring along our un used - used items to sale, like a car boot but with a twist. 

It sound like we all have items in our garages or sheds to sale and as my gran use to say 'One man rubbish is another mans gold'. 

What do you all think!