Jax was Jesus, and used Ava's stick horse as a donkey... complete with sounds effects.
I made makeshift palm frawns with pencils and green tulle, and just grabbed a few coats off the coatrack. Simple, but the kids loved it and reenacted it several times. The best part is, it stuck. I overheard Ava telling the story of Palm Sunday to her little friend today. I couldn't help but smile.