Not all home decorating ideas require a heavy investment of time and money. If you're looking for a few affordable home interior decorating ideas to freshen up a room over a weekend, try these ten: 1. Rearrange The Furniture- Pull your furniture away from the walls. Try positioning it at intriguing angles. For example, a sofa arranged diagonally across a narrow living room will make the room look wider. 2. Paint A Wall- Paint one wall your favorite color and make it the focal point.