It may sound a little morbid but our extended family graveyard is on our property and every so often we need to remove old flowers. Majority of the time they go right into the trash can, until I had an epiphany, some of the greenery was perfect scale for leaves and branches on the ground.
I have been picking up other greenery from the dollar tree and Ollie's Bargain Shop.
These particular greenery came from the graveyard.