Does anyone here have anything like little sets of stairs and platforms that fix to the wall, to give indoor cats different ways of exploring a room? My description is probably a bit rubbish. I think they're slightly more popular in the USA. Have tried googling, and come up with a few random sites, but would much rather hear from anyone who has actually got them. I think it's an interesting idea to use alongside cat trees etc, but real life feedback would be interesting.