Choosing fresh flowers can last through two seasons!
Create an arrangement, in a liner, that can be switched to a different container that changes the holiday. This is the same arrangement in a different setting. The effect can change by changing the background.
The pumpkin is the same. The Jack-O-Lantern for Halloween, and turn it around for Thanksgiving. Replace fall leaves for the black and orange accessories. Replace birds and squirrels for the witches. Add pine cones, berries, and fall leaves for ghosts.
Decorate for Halloween and easily change the setting, the day after, for Thanksgiving. After Thanksgiving is the best time to start Holiday Decorating!