Also, you'd be amazed where you can stash litterboxes. My favorite trick is angling a small lightweight piece of furniture in a corner, then stashing the box behind it. I have a small pine cabinet in my bedroom that easily slides out of the way to scoop twice a day. The cats have plenty of room to get back there and they like the privacy. Here's a picture of my room showing the cabinet -- its the one with the lamp. Even with the lamp, its a snap to move every day.

Yes, there IS a litterbox back there! Not one person has EVER guessed a litterbox would be back there.

If your computer desk is about 30" deep, stash one under where your feet go. Your feet don't go back that far anyway (unless you totally stretch out, but thats another story). Again, nobody but you knows there's a litterbox down there. Its easy enough to bend down and slide the box out ot be scooped every day.

I have one in my hall closet. It has a lid so if coats fall off the hangers, they fall on the lid, and not into the litter

I have one hidden behind a chair in the livingroom, one next to a bed under a nightstand... get creative and you'll be amazed where you can stash boxes! I have 8 boxes stashed through the house and the only one people really know about is the one in the bathroom -- and that was the first one we ever had! I didn't think as to how I could hide boxes!