I found this Dream Home Journal that is a style sourcebook & idea organizer. This journal by Cath Kidston is nicely designed and fun to use. It has helpful questions to help you journal ideas and get the creative juices flowing. There are lots of pages to paste in color inspiration and patterns. Graph paper pages make it easy to layout furniture. There are extra deep pockets to put more quick references for ideas. Now I can have all my ideas in one place. You can find it at Paper Posey or if you live in Utah they have them at Deseret Book in Orem.
If cutting paper and moving it around on graph paper isn't for you, there is an awesome free program by Sweet Home 3D available on line or for download. It helps you make a 2D furniture layout and then displays it in in 3D. I wish I had this last week when I pushed my furniture all over the living room until it fit. Even though pushing furniture back and forth is a great work out, you can really save some time by planning ahead.
If you have more helpful interior design helpful solutions please share the link.