Improve a small indoor cat space by identifying what is missing rather than adding as many objects as possible. The room should offer comfortable resting, an appropriate scratching surface, opportunities for play and a place to retreat, with clear routes between them. Measure the full footprint of prospective furniture, including overhanging beds and room needed for the cat to approach. A compact but cramped tower is not automatically a good space-saving purchase for a Maine Coon.
Consider whether one substantial resting platform and a separate scratcher would work better. Keep human walkways and doors usable, since furniture that must constantly be moved rarely becomes a reliable part of the cat's routine. Use suitable vertical space only with appropriate support and access. Rotate safe play activities rather than storing every toy on the floor, and observe which additions actually improve how your cat uses the room.
Before adding a new piece, name the problem it solves: no quiet bed, no upright scratching surface or no lookout. If you cannot identify a missing function, changing the position of an existing item may be more useful than another purchase.
For product comparisons alongside this advice, see Paw-Villian cardboard scratcher and Mouse Chase play set. The details below explain their sizes and uses.
Further reading: cats.org.uk; rspca.org.uk.
Paw-Villian cardboard scratcher
Mouse Chase play set
Koda Pod