1. Perforated Sheet Metal, $15
This large sheet is available at most hardware stores (Like Home Depot) and is often used for hobby and cabinetry. We used ours as a backdrop for other art, but you can use it as the art itself.
2. Pearl Jam Poster, $15
You don't have to have a bunch of art to make a statement. This one poster is colorful but simplistic and still packs a punch.
3. Snake Plant, ~$3-5
A living thing! It adds so much life to a room and this particular version is super easy to care for AND improves your air quality.
4. Table Lamp, $40
This kind of work lamp is great for a bedside because you can move the height up and down when you need more (or less) direct reading light.
5. Duvet Cover, $30
This simple striped duvet can be used as a coverlet in the summer and filled with a duvet for colder winter months.
6. "Nightstand" Stool, $15
Don't have room (or the budget) for a nightstand? Just use this cool IKEA stool for a two-tiered version.
7. Retro Flip-Clock, $15
Stop using your phone as your alarm clock. Instead, get this cool retro version.
8. Rug, $35
Instead of getting a rug that's the whole size of the room (which can be pretty pricey), try a runner that goes on one side of the bed.
Some other great resources for the Mid-Century Minimalist:
All Modern is a great store for budget-friendly Mid-Century furniture, lighting and decor.
CB2 is a great resource for classic shelving, useful decor and larger furniture items.
West Elm is a great place for chairs, bedding, desks and other more affordable modern pieces.
You should probably have an Eames chair. Or an Eames knock-off.
A plant in your room is a good idea. This kind is basically impossible to kill.