Part of my Innocent hat project.
https://www.ravelry.com/projects/WoodyOwl/innocent-hats
Such a versatile pattern, I love it! 
Only slightly modified to create these cheeky characters, the mods written below.
All- french knots for eyes, multiple stitches to create a nose.
Santa 
Used garter stitch on the beard.
Elf. 
Used yellow on rows 11, 12 and 13.
Gnome. 
Used garter stitch on beard.
Wizard 
Plain hat, added yellow stars. 
Used garter stitch on beard.
Witch 
No mods
Pierrot clown 
For face 4 rows of intarsia- 12 flesh, 6 white, 12 flesh 
Used black on rows 11, 12 and 13. 
Did row of white single crochet along the row under face, turn, 
then a row of black single crochet. 
Added 2 black bobbles on hat- 
Pick up a stitch in chosen place using black. 
Inc k, p, k, p, k wise into the stitch -5sts 
Purl a row 
k2tog, k1, K2tog -3sts 
p3tog 
Use end to create a good shape and stitch in place.
Gandalf the Grey 
1 row of brown on row 3 
Used garter stitch on the beard.
Watermelon Gnome 
Bottom green, with a row of pale yellow on row 3 and 4 
Hat- 
Rows 11, 12 and 13 green. 
Rows 14 and 15 pale yellow 
The rest in pink. 
Add black seeds using embroidery.
Clown. 
For face 4 rows of intarsia- 12 hair, 6 white, 12 hair. 
Added 2 bobbles on hat- 
Pick up a stitch in chosen place using black. 
Inc k, p, k, p, k wise into the stitch -5sts 
Purl a row 
k2tog, k1, K2tog -3sts 
p3tog 
Use end to create a good shape and stitch in place. 
Bow tie, cast on 4, k a row, p a row, k2tog, inc x2, k a row p a row, cast off. 
Use the end to wrap around the centre before stitching on.
Princess Cone hat 
Contrast belt on row 4. 
For face 4 rows of intarsia- 12 hair, 6 flesh, 12 hair. 
Added a few strands of wool out of the top of the hat. 
Added plaits- I cut 6 strands of hair coloured wool. 
One at a time I threaded a strand through a stitch of the hat band next to the side of the face, (pic 3) which meant I had 12 stands hanging- I plaited them and trimmed.
Elsa (Frozen) 
Knitted as Princess, added a snowflake to the hat using embroidery floss.
Leprechaun 
Green brim- rows 11, 12 and 13 
No decreases, continue on 30sts 
Black band- rows 14 and 15. 
Continue in green SS for 8 more rows 
Row 24 Purl 
Row 25 (P1, P2tog) repeat to end 
Row 26 Knit 
Row 27 P1 (P1, P2tog) repeat to last st, P1 
Row 28 Knit 
Row 29 P2tog across, b&t 
Add buckle on hat band. 
Used garter stitch on beard
Striped hat. 
Rows 11, 12 and 13 1st colour 
Then do 2 rows in each colour to end.
Rainbow hat. 
Main body red. 
For hat- Rows 11-14 violet 
Then change colour every 3 rows to end with red.
Bee Gnome 
Main body yellow. 
Hat- rows 11-14 yellow, 
Then alternate 3 rows brown to 3 rows yellow. 
Beard- used garter stitch. 
Antennae, in black cast on 2sts 
4 rows of icord, continuing in icord 
Inc x 2- 4sts 
K a row 
B&t, stitch to hat.