Find a window. Pile up boxes, tables or chairs to create a flat platform at least as high as the bottom of the window.
Tape, rig, or otherwise affix your paper to the ceiling. If you're starting with fresh paper, it will look better than this, I promise. This is all banged up because I moved it from where it was before.
Place object, and shoot away.
Not bad! It will depend on the time of day and the weather, but it's not bad.