A small space idea, like a tree house in your room. Utilize all space with shelf stairs up to the bed box. Get a closet too and all of it up off the floor space. Great for a boys room. Put a BB Net on the bed and voila! they can play indoors.
Loft bed from the Swedish company Compact-living. The concept is particularly great for a small or tiny house because it eliminates walls below. While the ladder doesn't look super fun to use the lighting and bed solution is innovative and fun.
Easy-to-make hammock for babies. This would be a unique idea for a baby shower- especially when the momma has had so many showers that there isn't much left on her registry. I'd fill it with other items so it would serve as a gift basket, too.