You could decorate different spots and leave em up year round. Just move your trailer for the appropriate holiday.Pfffttt...
Decorating one's abode for holidays has always seemed silly to me. A brother-in-law once made some plywood cutouts of snowmen and gave us a couple of them. In our last house, we lived in a neighborhood where a number of homes were decorated for Christmas. When our neighbor couple to the west of us were out stringing all the lights and putting up lawn displays, I walked out of the garage with the two snowmen cutouts. I placed one each leaning against the two "columns" on the front porch. Then, the brushed my hands together as loudly as I could and said, "Well, that job is done."
I really liked my neighbor, but he did give me a dirty look that day. (Seems it's his wife that was insistent on decorating.)