Attached are some photos of my existing workstation. A dark brown bed frame is to the left. A few problems:

1. The carpet is white (3x5 ft), but seems to get dirty easily. I've had it for 1.5 years.
2. Looking for a new desk that is not too heavy to move around (the current one is from Target and made of particleboard).
3. The computer chair has plastic casters, and I was thinking to get rubber casters in order to get rid of the carpet. However, I do not know how well the rubber ones would protect against scratching of the hardwood floor.

Any advice would be greatly appreciated!