Although I do have a workstation, I have never been a big fan of just sitting a CPU on the floor or on a hard and flat surface for the rest of its days. The Exponent Adjustable CPU Holder is a great solution for those that like the idea of having their CPU on castors. One advantage is that it is easy to transport from room to room, although I cant image this being high on anyone's priorities because i cant image many regularly moving the position of their CPU.
As I said, the CPU holder has 4 castors and they feel very robust and run very well over smooth surfaces. They aren't the greatest for thick pile carpets, though if you can afford thick pile carpets then you will be prepared to pay more than the £10 that this stand cost me!
The CPU stand also allows me to get the hoover right under it and because it is easy to move, it is easy to keep clean. Before this stand I found that dust gathers very quickly behind and inside the CPU and this can affect performance and reliability.
The assembly is another major plus point. All you need do to assemble is put the castors on and the rubber grips and the structure is up! I like the light colour of the stand, although it really depends on the colour of your CPU as to whether it would match.
At this price, the fact it helps ventilation to your CPU is, alone, a good enough reason to go out and buy one. Definately a top buy and will last a long time as it is adjustable to hold a range of sized CPU's.