Plushies are a limited time item that you can put in your float. There is a new one each month. So far there have been Swampfoot Plushie, Blowgrub Plushie, Grabrat Plushie, Hellhopper Plushie, Mimipede Plushie, Stiltskin Plushie and Pidgebomber Plushie. You can buy them for 2500 Spores or 250 Brass in the Furniture Outlet.