So it's horribly tacky, but this kind of trashy family has a GIANT inflatable penguin in their front yard that lights up, and I LOVE it. My parents told me it was too tacky and we couldn't get one, but then last weekend when I was coming home from a late night out, I noticed cute little light-up penguin stakes in our front yard!
A lot of our neighbors do get really overdecked, which is sad because their houses aren't that big (most of them are ranches) and they just look overwhelmed. We usually just do regular lights around the windows and on the trees in the front yard, then we have the "nice" upstairs in our living room (the real tree with all the keepsake ornaments) and then downstairs we have the "tacky" tree, which is a faux one with the goofy ornaments.