Now that we'll be getting popcorn, it occurs to me that this is an opportunity to make the park more "alive". If peeps sit on a bench while eating popcorn, a number of pigeons should land near them and walk around pecking the ground as if picking up spilled/thrown popcorn. Also, popcorn litter should attract pigeons as well.
I suppose bubblegum litter (as in goopy messes) should also be more dis-happifying to peeps who step in it that regular litter, maybe about the same level as vomit
. But I'd as soon avoid that and just poison feed the pigeons in the park 
I suppose bubblegum litter (as in goopy messes) should also be more dis-happifying to peeps who step in it that regular litter, maybe about the same level as vomit