DIY Weekly dry-erase board using a collage frame found at Walmart! Print days of week onto pretty paper, and put a different day into each section (behind glass). Write on glass with dry-erase markers.
Simple stack of multiple fabric-covered foam pads. makes a cushy "sofa" in the playroom, and can be pulled apart for multiple sleepover guests, movie night pillows, or tumbling games, etc. (they have fabric covered foam mattresses at Jysk)
Kitchen Islands With Seating: Pictures & Ideas From