Do you keep your decorations in family inventory or rebuy each holiday?

I think when I start playing with Seasons, I will sell and rebuy each year. I'm not looking forward to the skyrocket in bills and since what is sitting in your home or in your Sims' inventories counts towards the bills, I want to do everything I can to keep it under control.
Of course if you're living in an apt, this won't be an issue.