A personal favorite from my Etsy shop https://www.etsy.com/listing/476408950/abstract-portrait-painting-medium-9x12
With a wall that thin you might be able to do a walk through closet?
If you have extra pillows in your home, you can turn them into a small bed for the kids while watching TV or reading a book. http://craft.ideas2live4.com/2015/03/31/pillow-beds/ Got some extra pillows?
Textured Large Abstract Painting Acrylic by ObaidAbstractArt
Have I pinned this before? I don't care - it's so amazing that it deserves being pinned again!