I always have a hard time with my hobby. I am saying hobby specifically, I'm no pro or even good at playing ... I just love sounds and synths. But the computer desk is not made to host my 88 key masterkeyboard well .. it gets cramped. You have to reach far for mouse and computer keyboard, till you get hand pains and others. So I'm trying to come up with some cool DIY ideas or trying to find vailable solutions etc ... things where you can move your masterkbd under the table by means of a drawer, which you can adjust in height once out .... a similar thing for mouse and kbd to pull out across the master on its right side ... low enough to allow for some sensible ergonomy etc.
 
How do your home studios look?

Mine's a mess....

Mine's dusty...

It seems like this topic comes up every so often in the Cakewalk Forums. Interesting topic though. Member's studios appear to range from very nice modest bedroom setups to professional grade arrangements. Try using the Search feature and you should get hits. Here is one recent thread. It might not answer your specific issues on keyboard arrangement, but might offer some ideas for thought:

http://forum.cakewalk.com/m/tm.aspx?m=3329829

Studio? My creative space looks like a musical garage sale. Except less-organized.

CJ has one of the best studio pics we've all seen.
 
Too bad it was not his.

Literally in the corner of a room
 

 
I made a stand for my 49 key keyboard that let's my PC keyboard just barely slide under.  I'm in a corner desk.
 

 
 
Here's the whole mess
 

Nobody puts Bapu in a corner.

I have a rack of wide shelves on the wall where my desk is - the lowest shelf is about 6 inches above the desk and I put my monitors and screens on this. It's perfect because the screens and speakers are exactly at eye level, and I have space on the desk directly under the shelf to keep my 88 key A800-PRO. Whenever I need to use the keyboard I just slide it towards me (clearing any junk out of the way first, naturally).  It looks neat and tidy and since my screens and monitors are on the shelf I have a lot of room on the desk for musical stuff. Of course you have to make sure the shelf is strong enough - my shelves are attached to 3 vertical tracks which have been fitted to the wall with those ultra-strong wall fasteners. You could sit on 'em.