Add house slots. Sometimes you have a lot of different holiday furniture, and you don't have the space anymore.
Using slots to quickly change the theme of your house seems great. I am sort of starting to understand how graal's server works. So maybe, in order for this to work, you would have to wait a few hours, until your house slot has loaded. This way it doesn't load super fast, and cause a lot of lag. (Since there will be a lot of player's changing their slots around). A wait time, where you can't enter your house, until it's done, makes people change slots less.