Not a squishmallow, but I can highly recommend a dakimakura body pillow, especially if you get their heaviest variety. They sell the pillow by itself and plain covers. They are a bit on the pricey side, but it was worth it for me.

It’s heavy, it’s long, and it’s so heavenly squishy. Best cuddly pillow.

I loved to hug mine, but it was a bit too big for the weird way I sleep. I ended up buying two normal sized pillow covers/cases and splitting the filling between the two. Now I have two heavenly squishy pillows (that are a bit smaller)