Swapping couch with Recliner - how to fill holes in floor

I thought about the rug idea but opposite of that is the slide with the couch and it has carpet (carpet that needs replaced but I don't know how to get a piece with bound edges that is custom to that slide...another post later). I was worked that putting a rug there might look kind of hodge-podge (sp?). I do like the idea of making plugs...guess I'll see what I have after I remove the loveseat...