A bit daft to look at but they’re quick and simple to whip up.

Worked in the flat with a centre back seam, I can knock out a small one in about an hour and a half now.

The arms are worked into the row before the neck.
I’m finding that easier than sewing them on afterwards, and they are centred to the side just right.
But you can sew them on if you prefer.

Approximate quantities/sizes:
Small
15g of yarn, 5g of stuffing, 15cm (6 inches) high
Medium
30g of yarn, 15g stuffing, 20cm ( 8 inches) high
Large
90g yarn, 35g stuffing, 28cm ( 11 inches) high