cheaper portable sim rig

I got a new desk after I moved in august and my new desk is thinner than I thought. I have a fanatec csl dd and have been using a scrap piece of flooring so i can use the desk clamp and cardboard on the floor because the petals would be too far away I would just like a rig that i can move to my desk area when i play and like the corner of my room or something when not in use. I know this stuff can get expensive but I would prefer to spend $300 max less