Nothing.
Please don't keep that lamp that you hate or those draperies the have driven you crazy since you've moved in or those silly fake plants because you don't know what else to put there. Just let them go. Anything in your home that doesn't make you smile, feel good or have good memories, let it go. You don't need it. Promise. It's worth the splurge to replace, or don't replace it at all, revel in the empty space till the most perfect object finds its way into your life. Start fresh today.