Sell old keyboards, I'm not sure I could do that, though I did sell my Roland MC202 as it didn't suit my way of working (I like to play, not program!) and they are going for so much on ebay..... My studio has a moment of tidiness about once every 2 years when I finally get fed up with something not being egonomic enough, then it deterioates again...... new purchases quite often throw a spanner in the works! At present I have midi and audio leads trailing across the entrance to the studio because I can't decide where my drum pad are going to live. Bit off topic, but my studio oveflows because I can't get rid of anything, still have my 1st drum machine from 1986!