You could set them up as fix and assemble races. Each member has to bring a carb kit and hoses to the table...each one gets a carcass...and when its go time, the first one to replace the carb kit & rubber lines, gets it to start and cuts a cookie wins!. U go home with ten running saws! (Assuming all in similar condition, with compression & spark)
Better yet, The competitor's go home with one saw each and I go home with none.
They would all have to be the same saw, putting a carb kit into a Mini Mac takes about 10 times as long as putting one in a Poulan top handle.
I will donate as many saws as we would need of either type. But I think at least 3-4 of the poulans have burned up P/C's.
Jim