So... you want to make a guitar throne, eh? So did I and this is what I came up with (pictures 1 and 2). When I looked around the interwebs for inspiration, I started with a few google image searches and found a few... here are two pictures I gleaned from the search (pictures 3 and 4). After reviewing the search, I decided that I wanted to make a throne that was easy to assemble/disassemble and all components could be contained within the suitcase in order to simplify storage.
After getting an idea for what type of throne I wanted to make, I went out searching for a large old suitcases at local auctions/flea markets.