I am just loving these little couches, bed for cats and small dogs.  This is super fun, easy and so basic you can make them all kinds of different ways with textures, colors etc.  However you would like. And if you wanted to make a bigger one, then you would only use a bigger foam. But the basic pattern here

will give you the idea of how to put it all together and the pieces needed.
The couch when done is 18” x 14”. My cat is loving being in his. He even lays on the pillows.
The pattern is written in US terminology.
Materials:
I used Loops n Threads “Impeccable” yarn, but you can use any
kind of worsted weight yarn.
1 Ball Dark Gray
2 Balls True Gray
1 Ball Classic Gray
1 Ball Pale Gray
1 Ball Toasted Almond
very small amount of white, yellow, and strand of dark pink
3.00mm Crochet hook (for flower)
4.5mm Crochet hook
Stick Pins
Tapestry needle
Long tapestry needle
1/2 Bag Polyester Stuffing (8oz bag)
Soft Foam Cushioning (18”x 18” x 3”)
Glue Gun
Stitches Used:
sl st – slip stitch
sc – single crochet
hdc – half double crochet
foundation chain
fpdc – front post double crochet
bpdc – back post double crochet
Gauge: 8sts, by 11 Rows x4inches