Hidden doors -- This company makes cabinets, bookshelves and anything you can think of that fits your existing doorjambs thus hiding the door (and also making use of the space). If you click through checkout the "gun cabinet" door. Lots of great ideas.
Separate your wall colors. This is SUCH a good idea!! I dont like two colors coming together on a corner and this is the fix for that! This would also be a great fix for the beat-up corners in the house. Such a good fix for older homes!
GENIUS…Line a pathway with rocks painted in glow in the dark paint. During the day they “charge” in the sun and in the evening they reflect the stored light. Rust-Oleum Glow in the Dark Brush-on Paint.