I give you the pattern for Hamster Humphrey. If you spot any problems, please notify me and I will do my best to fix them.
What you will need:
Small amounts of worsted weight yarn in main color and three contrasts, and black for eyes
US Size 8 knitting needles
Crochet hook or tapestry needle (for seams)
Small amount of stuffing, or yarn scraps
You could also change the yarn weight and needle size for a smaller or larger hamster. Or you could use a larger needle size and felt Hamster Humphrey, as this was what I made Hamster Humphrey for anyway. But you don't have to if you don't want to.
kfb: knit into the front and back of the stitch
k2tog: knit two together
p2tog: purl two together
CO: cast on
CO 8 stitches
Row 1: kfb across (16 stitches)
Row 2: P
Row 3: kfb across (32 stitches)
Rows 4-12: fair isle chart (starts on a purl row)
Row 13: k
Row 14: p2tog across (16 stitches)
Row 15: k2tog across (8 stitches)
Row 16: p
Row 17: k2tog across (4 stitches)
Row 18: p
Row 19: k2tog across (2 stitches)
Break yarn and pull through both stitches
Felting: (optional) put hamster in the washing machine with a regular load of wash, set it to 'hot' and check on it every ten minutes or so.
Assembly: Sew up the seam at the bottom. Stuff the hamster and sew up both ends. Embroider on two eyes.
Finished hamster is about 4 inches long and 2.5 inches tall.