1) IKEA Queen storage bed (200 USD) http://www.ikea.com/us/en/catalog/products/40249881/
used, like new condition (original price I purchased from IKEA: 499 USD)
This bed gives you spacious storage without taking up any space in the room. Simply flip up the bed base and hide your things inside. Place it freestanding or with the headboard against a wall.
2) IKEA Queen memory foam mattress (200 USD)
used, like new condition (original price I purchased from IKEA: 549 USD)
similar to http://www.ikea.com/us/en/catalog/products/00272171/
A thick layer of memory foam molds to the contours of your body, relieves pressure, and helps you to relax.